Interconnected Void Structure (e.g., Permeable, Etc.) Patents (Class 428/566)
  • Patent number: 10265770
    Abstract: A metal injection molding apparatus includes a metal injection mold die having first and second die halves, a first set of features provided in the first die half, a second set of features provided in the second die half and complementary to the first set of features provided in the first are half and an ultrasonic transducer disposed in contact with the metal injection mold die. A binderless metal injection molding method is also disclosed.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 23, 2019
    Assignee: The Boeing Company
    Inventor: Carey E Wilkinson
  • Patent number: 9403213
    Abstract: In one embodiment, the present invention may be a method of forming a porous and/or dense article from metal powder (12), including adding to a mold a first feedstock comprising an agglomerated metal powder (12) and an agglomeration agent, forming said first feedstock into a green state dense article (22); and removing said agglomeration agent. Furthermore, the present invention may include a second feedstock including an agglomerated metal powder (12), a space filling material and an agglomeration agent which may be formed into a green state porous article (21). The present invention also includes a dense and/or porous article (22 and 21) manufactured by various methods, as well as methods for creating the dense and porous feedstocks. Moreover, the present invention may include an article which may be a medical implant.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: August 2, 2016
    Assignee: Howmedica Osteonics Corp.
    Inventor: John Lapszynski
  • Patent number: 9393349
    Abstract: A metal implant for use in a surgical procedure is provided with a surface layer that is integral with the metal substrate, and which incorporates a biocidal material. The surface layer may be grown from the metal substrate, by anodizing, and the biocidal material incorporated in it by ion exchange. Alternatively the layer may be deposited by electroplating, followed by diffusion bonding so as to become integral with the metal substrate. In either case, silver is a suitable biocidal material; and both the release rate and the quantity of biocidal material should be low to avoid toxic effects on body cells. Electropolishing the surface before formation of the surface layer is also beneficial, and this may be achieved by electropolishing.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: July 19, 2016
    Assignee: Accentus Medical Limited
    Inventors: Martin Edward Lee Pickford, Andrew Derek Turner
  • Patent number: 9273932
    Abstract: An armor material and method of manufacturing utilize nano- and/or microlaminate materials. In one embodiment, the armor material comprises a layered composite material including a strike face, a core layer, and a spall liner. The strike face achieves hardness and toughness by the controlled placement of hard and tough constituent materials through the use of nano- and/or microlaminate materials. The core layer achieves energy absorption through the use of nano- or microlaminated coated compliant materials. The spall liner provides reinforcement through the use of nano- or microlaminated fiber reinforced panels. In one embodiment, nano- and/or microlaminated materials can be manufactured through the use of electrodeposition techniques.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: March 1, 2016
    Assignee: Modumetal, Inc.
    Inventors: John D. Whitaker, Christina Lomasney
  • Patent number: 9192991
    Abstract: In one embodiment, the present invention may be a method of forming a porous and/or dense article from metal powder (12), including adding to a mold a first feedstock comprising an agglomerated metal powder (12) and an agglomeration agent, forming said first feedstock into a green state dense article (22); and removing said agglomeration agent. Furthermore, the present invention may include a second feedstock including an agglomerated metal powder (12), a space filling material and an agglomeration agent which may be formed into a green state porous article (21). The present invention also includes a dense and/or porous article (22 and 21) manufactured by various methods, as well as methods for creating the dense and porous feedstocks. Moreover, the present invention may include an article which may be a medical implant.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: November 24, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: John Lapszynski, Robert W. Klein, Michael A. DeLuise
  • Patent number: 9181781
    Abstract: A method of making a reconfigurable article is disclosed. The method includes providing a powder comprising a plurality of base material particles. The method also includes providing a powder comprising a plurality of removable material particles; and forming a base article from the base material comprising a plurality of removable material particles. A method of using a reconfigurable article is also disclosed. The method includes forming a base article, the base article comprising a base material and a removable material, wherein the base article comprises a downhole tool or component. The method also includes inserting the base article into a wellbore. The method further includes performing a first operation utilizing the base article; exposing the removable material of the base article to a wellbore condition that is configured to remove the removable material and form a modified article; and performing a second operation using the article.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 10, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Gaurav Agrawal, Zhiyue Xu, Ping Duan, James Goodson, James B. Crews
  • Patent number: 9095932
    Abstract: In various embodiments, protective layers are bonded to a steel layer, overlapped, and at least partially covered by a layer of unmelted metal powder produced by cold spray.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: August 4, 2015
    Assignee: H.C. Starck Inc.
    Inventors: Steven A. Miller, Leonid N. Shekhter, Stefan Zimmermann
  • Patent number: 9093242
    Abstract: Systems and methods in accordance with embodiments of the invention proficiently produce carbon nanotube-based vacuum electronic devices. In one embodiment a method of fabricating a carbon nanotube-based vacuum electronic device includes: growing carbon nanotubes onto a substrate to form a cathode; assembling a stack that includes the cathode, an anode, and a first layer that includes an alignment slot; disposing a microsphere partially into the alignment slot during the assembling of the stack such that the microsphere protrudes from the alignment slot and can thereby separate the first layer from an adjacent layer; and encasing the stack in a vacuum sealed container.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: July 28, 2015
    Assignee: California Institute of Technology
    Inventors: Harish Manohara, Risaku Toda, Linda Y. Del Castillo, Rakesh Murthy
  • Patent number: 9068346
    Abstract: The invention is directed to a porous, acoustic attenuating composition, wherein the composition comprises a nanostructured material and wherein the composition exhibits acoustic transmission loss ranging from 20 to 60 dB/cm thickness of the composition.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: June 30, 2015
    Assignees: The Board of Regents of the University of Texas System, Rensselaer Polytechnic Institute, The Curators of the University of Missouri
    Inventors: Hongbing Lu, Ning Xiang, Nicholas Leventis, Chariklia Sotiriou-Leventis
  • Patent number: 8962147
    Abstract: A powder metal component is made of compacted and sintered powder metal particles such as chromium-containing ferrous-based metal and is porous. Following sintering, the pores are impregnated with relatively smaller particles of ceria and/or yttria. The component is then heat treated and the presence of the impregnated ceria and/or yttria serve as nucleation sites for the formation of desirable oxides, such as chromium oxide, on the surface. The impregnated particles that lie below the protective oxide layer remain available throughout the life of the component in the event the original oxide layer becomes worn or damaged, wherein a renewed protective oxide is formed in such regions due to the presence of the impregnated particles.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: February 24, 2015
    Assignee: Federal-Mogul Corporation
    Inventors: Denis Christopherson, Jr., Jeremy Koth
  • Publication number: 20150017464
    Abstract: [Object] The present invention provides a porous sintered body which has a uniform porosity, a high level of freedom in forming, allowing to be formed into varieties of shapes and various levels of porosity, and to be formed to an extremely high level of porosity. [Means for Solution] There is provided a porous sintered body 1 which is obtained by sintering a powder 4, and includes hollow cores 5 following a vanished shape of an interlaced or otherwise structured fibriform vanisher material 2; sintered walls 6 obtained by sintering the powder held around the cores and extending longitudinally of the cores; and voids 7 between the sintered walls.
    Type: Application
    Filed: December 28, 2012
    Publication date: January 15, 2015
    Applicant: TAISEI KOGYO CO., LTD.
    Inventors: Shigeo Tanaka, Yasuhiro Kanoko
  • Publication number: 20140361670
    Abstract: A metal matrix composite using as one of the components a precious metal is described. In one embodiment, the precious metal takes the form of gold and the metal matrix composite has a gold mass fraction in accordance with 18 k. The metal matrix composite can be formed by blending a precious metal (e.g., gold) powder and a ceramic powder, forming a mixture that is then compressed within a die having a near net shape of the metal matrix composite. The compressed mixture in the die is then heated to sinter the precious metal and ceramic powder. Other techniques for forming the precious metal matrix composite using HIP, and a diamond powder are also disclosed.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 11, 2014
    Inventors: Christopher D. Prest, Lucy E. Browning, Michael K. Pilliod, Theodore A. Waniuk
  • Patent number: 8871357
    Abstract: A method for generating a closed-pore metal foam and a component in which such a metal foam is used are provided. To form the metal foam having closed pores, the component is provided with a composite of metal particles that may have a layer of a blowing agent. Alternatively the metal and the blowing agent can also be arranged in layers of a sheet, or as a mixture of particles. A heat treatment is the applied whereby the blowing agent liberates a propellant gas, the blowing agent including fullerenes or nanotubes to which the blowing agent is chemically or physically bound. Due to the high temperature stability of the nanotubes or fullerenes, blowing agents may be thereby generated which liberate propellant gas at temperatures of above 1000 DEG C., such that even metals with high solidus temperatures of above 1000 DEG C. may be processed to metal foams.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: October 28, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Frank Heinrichsdorff, Jens Dahl Jensen, Ursus Krüger, Gabriele Winkler
  • Patent number: 8815407
    Abstract: The present disclosure relates to a sliding bearing which is usefully applicable to equipment to which high surface pressure is applied, by processing an inner surface of a sliding bearing manufactured in the form of a sintered body to be optimized to lubrication characteristics.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: August 26, 2014
    Assignee: Doosan Infracore Co. Ltd.
    Inventor: Choung Rae Lee
  • Patent number: 8758675
    Abstract: The invention relates to a method for fabricating an open-porous metal foam body with a nickel base alloy, to a metal foam body fabricated this way as well as advantageous applications for the separation of specific components and pollutants from fluid flows. On the occasion, according to the set object open-porous metal foam bodies which have improved mechanical properties, and in addition an enlarged specific surface and/or increased surface roughness are to be provided. During fabricating it is proceeded such that an open-porous base foam body made of nickel or a nickel base alloy is coated with a liquid binding agent. Subsequent to this, a mixture of a powdery nickel base alloy and an organic component the temperature of phase transformation of which is at least 30 degrees centigrade from its solid phase to the liquid phase is deposited. The temperature should then be below the respective temperature of phase transformation.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: June 24, 2014
    Assignees: Alantum Corporation, Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Alexander Böhm, Dirk Naumann, Tilo Büttner, Gunnar Walther, Shadi Saberi, Lloyd Timberg
  • Publication number: 20140037977
    Abstract: There is provided a metal-based particle assembly comprising 30 or more metal-based particles separated from each other and disposed in two dimensions, the metal-based particles having an average particle diameter in a range of from 200 to 1600 nm, an average height in a range of from 55 to 500 nm, and an aspect ratio, as defined by a ratio of the average particle diameter to the average height, in a range of from 1 to 8, wherein the metal-based particles are disposed such that an average distance between adjacent metal-based particles may be in a range of from 1 to 150 nm. This metal-based particle assembly presents significantly intense plasmon resonance and also allows plasmon resonance to have an effect over a range extended to a significantly large distance.
    Type: Application
    Filed: March 30, 2012
    Publication date: February 6, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tomohiro Fukuura
  • Publication number: 20140011043
    Abstract: There is provided a metal-based particle assembly comprising 30 or more metal-based particles separated from each other and disposed in two dimensions, the metal-based particles having an average particle diameter of 200 to 1600 nm, an average height of 55 to 500 nm, and an aspect ratio of 1 to 8, wherein the metal-based particle assembly has in an absorption spectrum for a visible light region a maximum wavelength of a peak at a longest side in wavelength, and the maximum wavelength shifts toward a shorter side in wavelength in a range of from 30 to 500 nm as compared with that of a prescribed reference metal-based particle assembly. The metal-based particle assembly can have in an absorption spectrum a maximum wavelength of a peak at a longest side in wavelength, and the maximum wavelength is in a range of from 350 to 550 nm.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 9, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tomohiro Fukuura
  • Publication number: 20130305673
    Abstract: A sintered porous body made from a green compact of a flowable air laid mixture of metal particles and metal fibers is disclosed. The green compact is sintered to provide the porous sintered body with an isotropic distribution of metal particles and metal fibers throughout the matrix. The porous sintered body includes metal particles which act as nodes and are sintered to fibers and portions of fibers are sintered to other fibers.
    Type: Application
    Filed: January 24, 2012
    Publication date: November 21, 2013
    Applicant: ENTEGRIS, INC.
    Inventor: Robert S. Zeller
  • Publication number: 20130218281
    Abstract: A method of pressure forming a brown part from metal and/or ceramic particle feedstocks includes: introducing into a mold cavity or extruder a first feedstock and one or more additional feedstocks or a green or brown state insert made from a feedstock, wherein the different feedstocks correspond to the different portions of the part; pressurizing the mold cavity or extruder to produce a preform having a plurality of portions corresponding to the first and one or more additional feedstocks, and debinding the preform. Micro voids and interstitial paths from the interior of the preform part to the exterior allow the escape of decomposing or subliming backbone component substantially without creating macro voids due to internal pressure. The large brown preform may then be sintered and subsequently thermomechanically processed to produce a net wrought microstructure and properties that are substantially free the interstitial spaces.
    Type: Application
    Filed: April 30, 2010
    Publication date: August 22, 2013
    Applicant: ACCELLENT INC.
    Inventors: Mark W. Broadley, James Alan Sago, Hao Chen, Edward J. Schweitzer, John Eckert, Jeffrey M. Farina
  • Publication number: 20130216849
    Abstract: A reinforced porous metal foil is provided which comprises a porous portion comprising a two-dimensional network structure composed of a metal fiber; and a reinforced portion which is substantially non-porous or less porous than the porous portion, the reinforced portion being composed of the same metal the metal fiber and being continuous and integral with the porous portion. With such features, it possible to obtain a porous metal foil having superior properties at a low cost in a highly productive manner that is also suitable for continuous production.
    Type: Application
    Filed: January 6, 2012
    Publication date: August 22, 2013
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Tetsuhiro Matsunaga, Joe Nishikawa, Hajime Watanabe
  • Patent number: 8353975
    Abstract: A process for producing a fleece having metallic wire filaments, includes at least the following steps: a) forming a layer including wire filaments; b) producing first cohesive connections between at least some of the metallic wire filaments in a first joining process; and c) producing second cohesive connections between metallic wire filaments in a second joining process. A process for producing a honeycomb body having at least one fleece, a fleece, a honeycomb body, an apparatus and a vehicle using fleeces in the treatment of exhaust gas from motor vehicles, are also provided.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: January 15, 2013
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Rolf Brück, Peter Hirth
  • Publication number: 20130011691
    Abstract: A porous tantalum used for medical implantation is provided, which includes a foam structure with three-dimensional interconnecting pores and produced by: mixing a solution made by organic binder and dispersant and tantalum powder to form tantalum slurry, casting the tantalum slurry into a organic foam body through impregnation until the pores of the organic foam body are filled, drying the impregnated organic foam body with the tantalum slurry to remove the dispersant, degreasing the dried organic foam body to separate the organic binder and the organic foam body from the dried tantalum slurry in a protective environment of inert gas, vacuum sintering the dried tantalum slurry to obtain a porous sintered body, and vacuum annealing then treating the porous sintered body with normal post-treatments to obtain the porous tantalum. Accordingly, the porous tantalum has well-distributed interconnecting pores and sintering neck structures resulting in good mechanical properties, and especially good ductility.
    Type: Application
    Filed: September 8, 2010
    Publication date: January 10, 2013
    Inventors: Jianming Ruan, Jianquan Xie, Yunfeng Jie, Zhiqiang Wang, Hua Feng, Chao You, Qi Pang, Jian Zhou, Lei Ye, Bin Liu, Yazhuo Zhang
  • Publication number: 20120231290
    Abstract: Nanoporous polystyrene matrix can be fabricated from the self-assembly of degradable block copolymer, polystyrene-b-poly(L-lactide) (PS-PLLA), followed by the hydrolysis of PLLA blocks. Metal is deposited in nanopores of the PS matrix using the nanoporous PS as a template via electroless plating. After subsequent UV degradation of the PS matrix, metal in the nanopores remains, yielding a metal nanostructure. The metal nanostructure may be a gyroid nanostructure, helical nanostructure or columnar nanastructure.
    Type: Application
    Filed: May 16, 2012
    Publication date: September 13, 2012
    Applicant: National Tsing Hua University
    Inventors: Rong-Ming Ho, Han-Yu Hsueh
  • Patent number: 8021761
    Abstract: A plating member comprising a lead-free plating material is obtained by the present invention in a manner such that whisker formation on a plating layer 16 of the plating member can be suppressed and thus the plating member has good solderability. In the case of such plating member having, on the surface of a base material 15, a plating layer 16 comprising a lead-free material (Sn—Cu alloy, etc.), the plating layer 16 has a layer structure of two or more layers (a1 to a3), the average particle diameter of plating particles (P1 to P3) constituting each layer varies from layer to layer, and the plating particle volume fraction of the plating layer 16 is 80% to 90% when the proportion of plating particles occupying a unit volume is defined as a plating particle volume fraction of 100% on the assumption that a unit volume 20 is filled with plating particles P3 each having the maximum average particle diameter.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 20, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Nomura, Mitsuru Sakano
  • Publication number: 20110020662
    Abstract: A sintered porous metal body, which has a sintered structure having a volumetric porosity of 10 to 90%, wherein there are at least one powder particles selected from the group consisting of dielectric material powders and semiconductor material powders that absorb energy of electromagnetic wave having a frequency of 300 MHz to 300 GHz among the metal crystalline particles constituting the sintered body, wherein the particles are substantially homogeneously dispersed in the sintered body, and wherein the metal particles are sintered to bond each other to be united to constitute pores. The invention discloses a method of manufacturing the sintered porous metal body.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Inventors: Kazutaka OKAMOTO, Masami TAGUCHI
  • Patent number: 7763362
    Abstract: Disclosed are cohesive metallic structures, comprising sintered metallic nanoparticles, suitable for shielding against electromagnetic interference and radio frequency interference. Also disclosed are methods for forming such structures. Devices for shielding electromagnetic radiation and methods of shielding electromagnetic radiation using such devices are also provided.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: July 27, 2010
    Assignee: PChem Associates, Inc.
    Inventors: Gregory A Jablonski, Michael A Mastropietro, Christopher J. Wargo
  • Patent number: 7678470
    Abstract: Disclosed is a reinforced matrix for a molten carbonate fuel cell comprising a porous aluminum support and a lithium aluminate tape-cast on the porous aluminum support. Further, disclosed is a method for preparing the molten carbonate fuel cell comprising the reinforced matrix comprising steps of tape-casting a lithium aluminate on a porous aluminum support so as to prepare a reinforced matrix (S1), making a unit cell or a stack of the unit cells using the reinforced matrix (S2) and heat treating the unit cell or the stack so as to oxidize aluminum in the support into lithium aluminate (S3). According to the present invention, the method is simple and economic, and the mass production of the matrix is easy, and strength of the matrix can be increased effectively and therefore there is no worry about fracture or crack.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: March 16, 2010
    Assignee: Korea Institute of Science and Technology
    Inventors: Sung Pil Yoon, Seong Ahn Hong, In Hwan Oh, Tae Hoon Lim, Suk-Woo Nam, Heung Yong Ha, Jonghee Han, Eun Ae Cho, Jaeyoung Lee
  • Publication number: 20090290290
    Abstract: Provided are a porous valve metal thin film having a great surface area, a method for the production thereof, and a thin film capacitor having a great capacity density utilizing the thin film as an anode. The porous valve metal thin film is produced by a method comprising: 1) a step of preparing a thin film in which a valve metal and a hetero-phase component have a particle diameter within a range of from 1 nm to 1 ?m, and the valve metal and the hetero-phase component are uniformly distributed; 2) a step of subjecting the thin film to a heat treatment so as to adjust the particle diameter and to appropriately sinter the film; and 3) a step of removing the hetero-phase portion.
    Type: Application
    Filed: December 28, 2005
    Publication date: November 26, 2009
    Inventors: Toshiyuki Osako, Tetsufumi Komukai
  • Patent number: 7541085
    Abstract: A flexible core element having a large bonding surface area suitable for sandwich type construction comprising a plurality of first hexagonal nodes defining a first surface, a plurality of second hexagonal nodes defining a second surface spaced apart from and parallel to the first surface, and a plurality of rectangular wall members which interconnect said first hexagonal nodes to said second hexagonal nodes and define the depth of the core element. Each hexagonal node corresponds to an open hexagonal cell on its obverse surface and serves as a bonding surface. The core element is fabricated from a continuous sheet of material that has been die-cut with a repeating geometrical design, creased and folded, concertina style, in upon itself to make a double-sided core material that is flexible, able to vent, exhibits good bend and shear strength, and has a large surface bonding area rendering it suitable in the construction of lightweight sandwich panels and offering a wide array of other applications.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: June 2, 2009
    Inventor: Robert L. J. Burdon
  • Publication number: 20090123774
    Abstract: An R—Fe—B based porous magnet according to the present invention has an aggregate structure of Nd2Fe14B type crystalline phases with an average grain size of 0.1 ?m to 1 ?m. At least a portion of the magnet is porous and has micropores with a major axis of 1 ?m to 20 ?m.
    Type: Application
    Filed: May 18, 2007
    Publication date: May 14, 2009
    Inventors: Takeshi Nishiuchi, Noriyuki Nozawa, Satoshi Hirosawa, Tomohito Maki, Katsunori Bekki
  • Patent number: 7491448
    Abstract: A nano-particulate reticulated foam-like structure, which includes particles having a size of 10-200 nanometers. The particles are joined together to form a reticulated foam-like structure. The reticulated foam-like structure is similar to the structure of carbon nano-foam. The nano-particulate reticulated foam-like structure may comprise a metal, such as a hydrogen storage ahoy, either a gas-phase thermal or an electrochemical hydrogen storage alloy. The nano-particulate reticulated foam-like structure may alternatively comprise a hydroxide such as nickel hydroxide or manganese hydroxide or an oxide, such as a silver oxide or a copper oxide. When the nano-particulate reticulated foam-like structure is a hydrogen storage alloy, the material exhibits substantial immunity to hydrogen cycling decrepitation and an increase in the reversible hydrogen storage capacity by reduction of trapped hydrogen by at least 10% as compared to the same alloy in bulk form.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: February 17, 2009
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Marshall D. Muller, Lin R. Higley
  • Publication number: 20080213611
    Abstract: The exemplary embodiment of the present invention are provided which relate to porous implants and methods for manufacture thereof which use powder molding techniques. For example, a suspension can be provided comprising a plurality of first particles of at least one organic polymer, a plurality of second particles of at least one metal-based material, and at least one solvent. The first and second particles can be substantially insoluble in the solvent. The suspension can be molded to form a green body comprising the first particles embedded in a matrix of compressed second particles. The first particles may be removed from the green body by thermally induced decomposition and/or evaporation. The green body can be sintered to form the implant. The removals of the first particles can be performed during sintering.
    Type: Application
    Filed: January 18, 2008
    Publication date: September 4, 2008
    Applicant: CINVENTION AG
    Inventor: Sohéil Asgari
  • Publication number: 20080148940
    Abstract: The invention relates to a method for fabricating an open-porous metal foam body with a nickel base alloy, to a metal foam body fabricated this way as well as advantageous applications for the separation of specific components and pollutants from fluid flows. On the occasion, according to the set object open-porous metal foam bodies which have improved mechanical properties, and in addition an enlarged specific surface and/or increased surface roughness are to be provided. During fabricating it is proceeded such that an open-porous base foam body made of nickel or a nickel base alloy is coated with a liquid binding agent. Subsequent to this, a mixture of a powdery nickel base alloy and an organic component the temperature of phase transformation of which is at least 30 degrees centigrade from its solid phase to the liquid phase is deposited. The temperature should then be below the respective temperature of phase transformation.
    Type: Application
    Filed: February 24, 2006
    Publication date: June 26, 2008
    Applicant: CVRD INCO LIMITED
    Inventors: Alexander Bohm, Dirk Naumann, Tilo Buttner, Gunnar Walther, Shadi Saberi, Lloyd Timberg
  • Patent number: 7361272
    Abstract: The present invention is to provide an anisotropic porous material for a fluid filter which can perform a separation process of a large amount of fluid with high accuracy, which can achieve high flux, and which can improve detergent properties. The anisotropic porous material includes a plurality of pores. Each of the pores has an anisotropic shape in which a major axis and a minor axis can be defined. An arrangement of the pores has an orientation.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: April 22, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuneji Kameda, Yoshiyasu Ito, Takahiko Shindo, Yuuji Hisazato
  • Patent number: 7318962
    Abstract: A device having a substrate, a pair of ferromagnetic leads on a surface of the substrate, laterally separated by a gap, and one or more ferromagnetic microparticles comprising a conductive coating at least partially within the gap. The conductive coating forms at least part of an electrical connection between the leads. A molecular junction may connect the leads to the microparticle.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: January 15, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David P. Long, James G. Kushmerick
  • Patent number: 7156743
    Abstract: An inexpensive mechanical fuse having a high fatigue limit ratio and high rupture reliability, and superior in forming performance, and a method of manufacturing the same are presented. The mechanical fuse is composed of Fe-based sintered alloy, and comprises an inner rim 2 fixed to one power transmission shaft, an outer rim 3 fixed to the other power transmission shaft, and plural arms 4 for linking the inner rim 2 and outer rim 3, which are formed integrally. The arms 4 include rupture portions 6 which are ruptured when exposed to an overload torque. By treating in steam, an iron oxide phase is formed in the surface layer and pore inner wall. The iron oxide phase is effective to form round pores and lower the notch sensitivity. As a result, the fatigue strength and fatigue limit ratio are enhanced.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: January 2, 2007
    Assignees: Hitachi Powdered Metals Co., Ltd., Denso Corporation
    Inventors: Tadayuki Tsutsui, Kei Ishii, Yoshihiro Tanimura, Kouji Yamada, Yuuichi Aoki
  • Patent number: 7059130
    Abstract: A heat exchanger is applied well to a turbo-generator system and a fuel-reforming system. The heat exchanger has porous metals disposed in a hotter area and a colder area, one to each area, and a wall separating the two areas from one another. The porous metals are merged integrally with the wall through junction layers to raise the efficiency of the heat exchanger. The porous metals in the hotter and colder areas are merged together with the opposite surfaces of the wall through junction layers buried into the porous metals. The junction layers are made of pasty joining material kneaded with a powdery metal. The junction layers over the porous metals are brought into close contact with the opposite surfaces of the wall and subjected to sintering to get the porous metals merging together with the wall.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 13, 2006
    Assignees: Ship & Ocean Foundation
    Inventor: Hideo Kawamura
  • Patent number: 7014367
    Abstract: An oil-impregnated sintered sliding bearing formed of a porous iron-based sintered alloy with quenched structure and receiving a high surface pressure capable of reducing the number of finishing steps by cutting and grinding and providing a bearing performance equivalent to or higher than that of conventional bearings, wherein a plurality of ridge-and-groove lines having a height difference of 2 to 12.5 ?m and extending in circumferential direction are axially arranged in parallel with each other by boring the bearing surface thereof to form a wavy surface in axial direction, and the portion thereof deeper by 10 to 60 ?m from the outer layer of the bearing surface is formed dense to seal surface pores so as to reduce the pores opening to the outer surface to 1 to 10 percent by area, whereby the bearing can be used at a surface pressure of 6 kgf/mm2 (58.5 MPa) or higher and a sliding speed of 2 to 5 cm/s.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: March 21, 2006
    Assignees: Hitachi Powered Metals Co., Ltd., Hitachi Construction Machinery Co., Ltd.
    Inventors: Motohiro Miyasaka, Kazuo Maruyama, Michiharu Mogami, Junichi Kobayashi, Hideki Akita, Osamu Gokita
  • Patent number: 6926969
    Abstract: The invention relates to a process for the production of sintered porous bodies, to porous bodies produced correspondingly using the process, and to their use. With the solution according to the invention, sintered bodies which achieve improved properties, such as an increased surface area, deformability of the structures at room temperature or modification of the initial pore volume, are to be produced. To this end, at least one sintering-active powder which forms at least one intermetallic phase or mixed crystals is applied to the surface of a porous basic body. Heat treatment is to be carried out subsequently, in which intermetallic phases or mixed crystals which increase the specific surface area can be formed.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: August 9, 2005
    Assignees: Inco Limited, Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e. V.
    Inventors: Alexander Bohm, Hartmut Gohler, Dirk Naumann
  • Patent number: 6881817
    Abstract: Adhesive composition consisting of an aminoplast resin with a free formaldehyde-like compound being present. In particular an adhesive composition consisting of a melamine-urea-formaldehyde resin to which a free formaldehyde-like compound has been added so that F/(NH2)2 is equal to 0.8-1.6. The adhesive is in particular suitable for the preparation of board material by combining in a press cellulose-containing materials with the adhesive according to the invention and in this press manufacturing board material at elevated temperature and pressure.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: April 19, 2005
    Assignee: DSM IP Assets B.V.
    Inventors: Adriaan Cornelis Lambertus Maria Van Der Waals, Gerard Evert Oosting, Jozef Maria Johannes Mattheij
  • Patent number: 6838202
    Abstract: A bipolar plate for use with a fuel cell is provided including an electrically conductive foam as a coolant layer between thin metal foil layers. The thin metal foil layers are provided with serpentine flow field patterns on a surface thereof.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: January 4, 2005
    Assignee: General Motors Corporation
    Inventors: Brian K. Brady, Gerald W. Fly
  • Patent number: 6828037
    Abstract: The invention provides a hydrogen permeable structure, which can effectively prevent peeling-off of a hydrogen permeable film and hence has higher durability, and a method of manufacturing the structure. The hydrogen permeable structure has a hydrogen permeable film formed on the surface of or inside a porous support, having a thickness of not more than 2 &mgr;m, and containing palladium (Pd). The hydrogen permeable film is formed on the surface of or inside the porous support by supplying a Pd-containing solution and a reducing feed material from opposite sides of the porous support.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: December 7, 2004
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Uemura, Kentaro Yoshida, Nobuyuki Okuda, Takeshi Hikata
  • Publication number: 20040229035
    Abstract: The present invention relates to thermally conductive, elastomeric pads. The pads can be made by injection-molding a thermally conductive composition comprising about 30 to 60% by volume of an elastomer polymer matrix and about 25 to 60% by volume of a thermally conductive filler material. The resultant pads have heat transfer properties and can be used as a thermal interface to protect heat-generating electronic devices.
    Type: Application
    Filed: June 17, 2004
    Publication date: November 18, 2004
    Inventors: E. Mikhail Sagal, Kevin A. McCullough, James D. Miller
  • Patent number: 6773825
    Abstract: An improved porous article and a method for forming such porous article are provided. A mixture of ceramic or articles and pliable organic hollow spheres is prepared in a liquid typically as a suspension. The article is formed by pressing, slip casting, extruding or injection molding the mixture. The article is dried to remove the liquid, and then is fired so that the particles are bonded such as by sintering, and the organic spheres are eliminated, resulting in a strong porous article having uniformly spaced interconnected voids.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: August 10, 2004
    Assignee: Porvair Corporation
    Inventors: Gary R. Pickrell, Kenneth R. Butcher, Chi Li Lin
  • Publication number: 20040110022
    Abstract: An improved porous article and a method for forming such porous article are provided. A mixture of ceramic or metal particles and pliable organic hollow spheres is prepared in a liquid, typically as a suspension. The article is formed by pressing, slip casting, extruding or injection molding the mixture. The article is dried to remove the liquid, and then is fired so that the particles are bonded such as by sintering, and the organic spheres are eliminated, resulting in a strong porous article having uniformly spaced interconnected voids.
    Type: Application
    Filed: May 23, 2003
    Publication date: June 10, 2004
    Applicant: Porvair Corporation
    Inventors: Gary R. Pickrell, Kenneth R. Butcher, Chi Li Lin
  • Publication number: 20040101706
    Abstract: The invention relates to a process for the production of sintered porous bodies, to porous bodies produced correspondingly using the process, and to their use. With the solution according to the invention, sintered bodies which achieve improved properties, such as an increased surface area, deformability of the structures at room temperature or modification of the initial pore volume, are to be produced. To this end, at least one sintering-active powder which forms at least one intermetallic phase or mixed crystals is applied to the surface of a porous basic body. Heat treatment is to be carried out subsequently, in which intermetallic phases or mixed crystals which increase the specific surface area can be formed.
    Type: Application
    Filed: September 22, 2003
    Publication date: May 27, 2004
    Inventors: Alexander Bohm, Hartmut Gohler, Dirk Naumann
  • Publication number: 20040072010
    Abstract: A porous sintered metal comprising voids at least partially communicating with each other, and pores provided in walls of the voids, the porous sintered metal having a BET surface area of 700 cm2/cm3 or more, and an average diameter of the pores being 1 &mgr;m or more when measured by a mercury press-in method. The porous sintered metal is produced by blending a metal powder, a binder and resin particles to prepare a mixture in which the resin particles are dispersed; molding the mixture to provide a green body; selectively extracting the resin particles from the green body with a solvent; debinding the extracted green body by heating; and sintering the debound green body.
    Type: Application
    Filed: July 14, 2003
    Publication date: April 15, 2004
    Applicant: HITACHI METALS, LTD.
    Inventors: Kenji Date, Masumi Nakai
  • Publication number: 20030173720
    Abstract: Channeled articles having very small diameter channels spaced very closely can be made by packing elongated cores in a fixture, clamping them, and then introducing matrix material around the cores. The matrix material is formed into a unitary body and solidified. The cores are pulled out, leaving open channels where they had been. Some core and matrix combinations will permit the cores to be pulled out. Others require a core release coating to be applied to the cores. The cores can be metal or ceramic or polymer, and the matrix can be metal or ceramic or polymer. The cores can be solid, or hollow. Rather than pulling the cores out, if they are polymer, they can be burned out. The matrix can be formed by liquid state, solid state, or hybrid liquid/solid state techniques. A related technique uses hollow cores, which are not pulled out, but which remain in the body after unification. For such tube-walled articles, the matrix can be formed similarly. Rather than insuring core release, core retention is required.
    Type: Application
    Filed: March 12, 2002
    Publication date: September 18, 2003
    Applicant: Massachusetts Institute of Technology
    Inventors: Christopher S. Musso, Thomas W. Eagar
  • Patent number: 6548183
    Abstract: A metal-based composite material is formed by impregnating a matrix metal of Al or Al alloy into ores of a porous preform of a hydrogenatable metal having a metal hydride in at least a part of its surface.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 15, 2003
    Assignees: Tocalo Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshifumi Kobayashi, Nobuyuki Kuroki, Fumiyoshi Kurosu
  • Publication number: 20030044631
    Abstract: The present invention relates to thermally conductive, elastomeric pads and methods for manufacturing such pads. The methods involve injection-molding a thermally conductive composition comprising about 30 to 60% by volume of an elastomer polymer matrix and about 25 to 60% by volume of a thermally conductive filler material. The resultant pads have heat transfer properties and can be used as a thermal interface to protect heat-generating electronic devices.
    Type: Application
    Filed: August 22, 2002
    Publication date: March 6, 2003
    Inventors: E. Mikhail Sagal, Kevin A. McCullough, James D. Miller