Agglomeration Or Accretion Patents (Class 264/29.3)
  • Patent number: 10160650
    Abstract: The present invention relates to a method for making a three dimensional carbon structure and also to a sintered article comprising pyrolyzed carbon particles. The method comprises sintering a powdered organic material, preferably using selective laser sintering, to form a sintered three dimensional structure having a desired shape. The sintered structure is then pyrolyzed to form the final carbon structure. The method is particularly useful in the production of biomedical implants such as bone scaffolds and joint replacements. In some embodiments, the powdered organic material is lignin which provides a renewable and highly cost effective starting material for the method of the present invention.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 25, 2018
    Assignee: Morris Brothers and Company Holdings Limited
    Inventor: Patrick John Morris
  • Patent number: 9090844
    Abstract: A method for producing moldings, in particular briquettes, from fine-grained to medium-grained mixed material using organic binders. In a first stage, the mixed material is heated to a temperature necessary for the molding operation. In a second, atmospherically separate stage, mixing of the mixed material with binder is performed, as well as downstream steps of the process. The method allows hazardous emissions to be avoided.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: July 28, 2015
    Assignee: SIEMENS VAI METALS TECHNOLOGIES GMBH
    Inventors: Wilhelm Fingerhut, Hado Heckmann, Leopold Werner Kepplinger, Kurt Wieder, Johann Wurm
  • Patent number: 8840817
    Abstract: The present invention is a preparation method for asphalt-based spherical activated carbon which requires no infusibilization process. Placing coal tar asphalt into a melting device; introducing compressed air of 0.1 MPa-0.5 MPa into the device and stirring until a melting temperature of 280° C.-350° C. is reached; continuing for 2-8 hours until the base material has a softening point of 200° C.-260° C.; after cooling down, pulverizing the base material to obtain asphalt powder. Obtaining 34%-79% by mass of carbon powder, 1%-10% by mass of binder, and 20%-65% by mass of the asphalt powder and then forming spherical particles with a diameter of 0.5 mm-5 mm with the carbon powder, the binder and the asphalt powder at room temperature. Introducing the spherical particles of asphalt directly into an asphalt carbonization furnace for carbonization at a temperature of 600° C.-900° C. under protection of an inert gas to obtain asphalt spherical carbon.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: September 23, 2014
    Assignees: Shenzhen BaTian Ecotypic Engineering Co., Ltd.
    Inventors: Xiangmin Yu, Yizhou Kong
  • Patent number: 8753552
    Abstract: A heat sink using porous graphite having graphite particle-stacked porous graphite is provided. The heat sink may provide good heat conductivity and improve strength of carbon foam. Also, a manufacturing method of porous graphite is provided.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: June 17, 2014
    Assignee: Shuoen Tech. Co., Ltd
    Inventors: Hsu-Tien Hu, Jiun-Hsu Hsiao
  • Patent number: 8703027
    Abstract: Methods and compositions relate to manufacturing a carbonaceous article from particles that have pitch coatings. Heating the particles that are formed into a shape of the article carbonizes the pitch coatings. The particles interconnect with one another due to being formed into the shape of the article and are fixed together where the pitch coatings along adjoined ones of the particles contact one another and are carbonized to create the article.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: April 22, 2014
    Assignee: Phillips 66 Company
    Inventor: Zhenhua Mao
  • Patent number: 8673188
    Abstract: A carbon/carbon part and a process for making carbon/carbon parts is provided. The process involves forming steps, carbonization steps and densification steps. The forming steps may include needling fibrous layers to form fibers that extend in three directions. The carbonization steps may include applying pressure to increase the fiber volume ratio of the fibrous preform. The densification steps may include filling the voids of the fibrous preform with a carbon matrix.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 18, 2014
    Assignee: Goodrich Corporation
    Inventors: John S. Linck, Chris T. Kirkpatrick
  • Patent number: 8603374
    Abstract: A polymer-bonded fiber agglomerate includes short fibers selected from carbon, ceramic materials, glasses, metals and organic polymers, and a polymeric bonding resin selected from synthetic resins and thermoplastics. The fiber agglomerates have an average length, measured in the fiber direction, of from 3 mm to 50 mm and an average thickness, measured perpendicularly to the fiber direction, of from 0.1 mm to 10 mm. At least 75% of all of the contained fibers have a length which is at least 90% and not more than 110% of the fiber agglomerate average length. A fiber-reinforced composite material having the fiber agglomerate and processes for the production thereof are also provided.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: December 10, 2013
    Assignee: SGL Carbon SE
    Inventors: Peter Domagalski, Alfred Haeusler, Ingrid Kraetschmer, Andreas Kienzle, Dieter Wuestner
  • Patent number: 8221883
    Abstract: For a graphite sheet, a peak intensity ratio (P100/002) of a (100) diffraction peak and a (002) diffraction peak by X-ray diffractometry, and a peak intensity ratio (P110/002) of a (110) diffraction peak and a (002) diffraction peak thereby are set at 10 or more. The graphite sheet is manufactured through a step of preparing a polymer liquid which contains a polymer having carbon in its molecular chains and develops optical anisotropy, a step of unidirectionally orienting the molecular chains of the polymer, a step of obtaining a compact from the polymer liquid in the state that the orientation of the molecular chains of the polymer is maintained, and a step of carbonizing and thereafter graphitizing the compact.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: July 17, 2012
    Assignee: Polymatech Co., Ltd.
    Inventors: Naoyuki Shimoyama, Takehiko Nunokawa
  • Patent number: 7897132
    Abstract: A process of making a carbon alloy from other carbonaceous materials is provided. A particulate of partially pyrolyzed carbon (PPC) base is formed on heating a carbon-containing feed material and a nucleating agent in the form of an interactive filler. The nucleating agent is adhered together to the PPC particles by application of heat. The material is molded into a shape, voids in the material are collapsed and the resulting carbon alloy is cooled.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: March 1, 2011
    Inventors: Siddhartha Gaur, Vibha Bansal
  • Patent number: 7625543
    Abstract: Provided is a production process for a carbonized product characterized by comprising the following steps (a) to (b): (a) a step in which metal-made or ceramic-made plural granular matters are charged into a heat treating apparatus which is maintained at a temperature of 400° C. or higher and 700° C. or lower and allowed to move therein and in which a carbonized product precursor is fed into the above apparatus and subjected to heat treatment, whereby the carbonized product is adhered on the surface of the above granular matters and (b) a step in which the carbonized product adhered on the surface of the granular matters is heated at a higher temperature than the heat treating temperature in the step (a) and 900° C. or lower, whereby the carbonized product is separated from the granular matters. The present invention provides a production process for an inexpensive and useful carbonized product by simple apparatus and steps.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: December 1, 2009
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ryusuke Shigematsu, Koichi Kanno, Takahiro Ojima, Takashi Kojima
  • Patent number: 7534328
    Abstract: The present invention provides a method of making a carbon electrode, suitable for use as an anode in an aluminum reduction cell, which comprises mixing an aggregate, comprising a mixture of particulate shot coke, and a particulate carbonaceous material other than shot coke with coal tar pitch or petroleum pitch or a combination of these pitches at an elevated temperature to form a paste wherein said aggregate comprises a combination of butts, coarse, and fine particles and said particulate shot coke may comprise a majority of said coarse particles or fine particles, and said paste comprises from about 80 to about 90%, by weight, of said aggregate and from about 10 to about 20%, by weight, of said pitch; forming said paste into a solid body; and baking said solid body at an elevated temperature to form said carbon electrode.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: May 19, 2009
    Assignees: CII Carbon LLC, Century Aluminum Company
    Inventors: Leslie C. Edwards, M. Franz Vogt, Richard O. Love, J. Anthony Ross, William Rogers Morgan, Jr.
  • Patent number: 7332112
    Abstract: An apparatus and method for forming a densified carbon-carbon composite. The apparatus includes: a green part molding station for forming a green part; a carbonization station for carbonizing the green part; and an impregnation station for impregnating the carbonized part with a substantially curing by-product free, high carbon yield resin. The impregnation station includes a mold forming a sealed enclosure configured in the shape of the carbonized part for receiving the carbonized part and a vacuum source for evacuating the mold. At least one resin injection port is in the mold and a supply of substantially curing by-product free, high carbon yield resin is connected to the resin injection port for injection into the mold. In the preferred embodiment, the substantially curing by-product free, high carbon yield resin is a cyanate ester having a viscosity of less than about 100 cps at 250° F. and a carbon yield value of greater than about 60 wt. %.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: February 19, 2008
    Assignee: N.C. A&T State University
    Inventors: Kunigal N. Shivakumar, Vishnu Sarma Avva, Mannur J. Sundaresan, Felix Abali, Anthony Cunningham, Robert L. Sadler
  • Patent number: 7198739
    Abstract: Preform for carbon-carbon composite part (55) comprising multiple layers of fibrous mats (51, 52, 53) wherein each mat (51, 52, 53) comprises random carbon-containing fibrous matrix (11) having polymeric binder distributed therein and wherein adjacent mats (51, 52, 53) are bound together by additional polymer binder, stitching, and interlocking tabs. Also, method of manufacturing thick multi-layer composite preform, by: providing optionally reconfigurable tool including perforated screen through which vacuum can be drawn; delivering chopped fibers (b) to the tool while drawing vacuum therethrough to form fibrous object; delivering binder (c) to the fibrous object; melting or curing the binder (d) to make a fibrous mat (51, 52, 53); assembling plurality of the fibrous mats (51, 52, 53) and additional binder into the shape of a preform (e); and heat-pressing the resulting mat assembly (f) into finished thick preform (55).
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: April 3, 2007
    Assignee: Honeywell International Inc.
    Inventors: Mark L. La Forest, Nabil Abu Gharbieh, Raymond J. Cipra, Alan E. Fatz, Thomas H. Siegmund
  • Patent number: 6913716
    Abstract: Disclosed is a method for manufacturing composite granules having a homogeneous particle distribution, comprising powders of multimodal particle size distribution and phenol resins, and a method for manufacturing green bodies having homogeneous microstructure without particle separation from the granules.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: July 5, 2005
    Assignee: Korea Institute of Science and Technology
    Inventors: Hae-Weon Lee, Huesup Song, Jongho Lee, Joosun Kim, Hyunick Shin
  • Patent number: 6855279
    Abstract: The invention provides a weather-resistant exterior building material which has been unavailable in the past with respect to characteristics of keeping harmful insects such as white ants, and so forth away therefrom, light weight, a long service life, insusceptibility to variation in temperature, hygroscopicity, and easiness in fabrication, and an exterior article made up of the same. The weather-resistant exterior building material according to the invention makes use of a compact formed of RB ceramic, CRB ceramic, or fire-resistant CRB ceramic.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: February 15, 2005
    Assignee: Minebea Co., Ltd.
    Inventors: Kazuo Hokkirigawa, Rikuro Obara
  • Patent number: 6844378
    Abstract: A method of producing three-dimensional particle structures with enhanced magnetic susceptibility in three dimensions by applying a triaxial energetic field to a magnetic particle suspension and subsequently stabilizing said particle structure. Combinations of direct current and alternating current fields in three dimensions produce particle gel structures, honeycomb structures, and foam-like structures.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: January 18, 2005
    Assignee: Sandia Corporation
    Inventors: James E. Martin, Robert A. Anderson, Rodney L. Williamson
  • Patent number: 6719956
    Abstract: A carbonaceous material and a process of making the carbonaceous material is provided. A particulate of partially pyrolyzed carbon (PPC) base is formed on heating a carbon-containing feed material and a nucleating agent in the form of a interactive filler is included. The nucleating agent is adhered together to the PPC particles by application of heat.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: April 13, 2004
    Inventors: Siddhartha Gaur, Vibha Bansal