Accretion From Bulk Patents (Class 264/301)
  • Patent number: 9693964
    Abstract: This present invention discloses hydroxypropyl starch vacant capsules and a process for producing them, wherein said hydroxypropyl starch vacant capsules are made of hydroxypropyl starch and water and optional light-screening agent, colorant, aromatics, and flavoring agent through the processes of raw material mixup, gelatinization, stabilization, and capsule-forming. The hydroxypropyl starch capsules disclosed in this invention have such advantages as extensive source of raw material, high safety level, disintegrating property and friability over the products prepared through existing technologies.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: July 4, 2017
    Assignee: Hunan Er-Kang Pharmaceutical Co., Ltd.
    Inventors: Fangwen Shuai, Xiangfeng Wang, Jiawei Zhang
  • Patent number: 9671529
    Abstract: The present subject matter provides a transitional layer and related methods, used to increase the transmission or reflection of light between two mediums having different indices of refraction. The transitional layer is disposed between the two mediums and the transmission or reflection of light is increased by the interaction of light with the transitional layer. The transitional layer has light scattering particles dispersed therein, a single-layer gradient index-of-refraction, a multi-layer gradient index-of-refraction, alternating layers of high and low index-of-refraction, or a combination thereof, in order to increase the transmission or reflectance of light between the two mediums.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: June 6, 2017
    Assignee: Ferro Corporation
    Inventors: George E. Sakoske, Enos A. Axtell, III, James D. Walker
  • Publication number: 20150132372
    Abstract: The present disclosure relates to aqueous compositions for use in the manufacture of capsule shells and capsules with a functional polymer dispersion. The present disclosure relates to aqueous compositions for use in the manufacture of capsule shells endowed with controlled release properties. The present disclosure also relates to aqueous compositions for use in the manufacture of capsule shells and capsules endowed with moisture barrier properties. The present disclosure also relates to methods of manufacturing the capsule shell and capsules, and to capsule shells and capsules obtained therewith.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 14, 2015
    Inventors: Hassan Benameur, Keith Hutchison
  • Patent number: 9005508
    Abstract: An automated mandrel dip coating process assembly for RTV silicone dispersions is described, including an enclosure adapted to hold a moisture-cure ambient temperature curable medium for mandrel dip molding and at least one mandrel having a surface for contacting the moisture-cure ambient temperature curable medium. An automated motive drive assembly is arranged to removably translate one or more of the mandrel(s) into contact with the moisture-cure ambient temperature curable medium in the enclosure, and to subsequently translate at least one mandrel contacted with the moisture-cure ambient temperature curable medium into at least one of (A) contact with a bubble crusher in the enclosure, and (B) disengagement from the moisture-cure ambient temperature curable medium in the enclosure and rotation of the mandrel at a vertical displacement angle of from 70° to 110°.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: April 14, 2015
    Assignee: Polyzen Inc.
    Inventors: Tilak M. Shah, Medhadakshina Murty Peri
  • Publication number: 20150050334
    Abstract: The present invention relates to new acid resistant hard pharmaceutical capsules, a process for their manufacture and use of such capsules particularly but not exclusively for oral administration of pharmaceuticals, veterinary products, food and dietary supplements to humans or animals. The capsules of the invention are obtained by aqueous compositions comprising a water soluble film forming polymer and gellan gum in a mutual weight ratio of 4 to 15 weight parts of gellan gum for 100 weight parts of film forming polymer.
    Type: Application
    Filed: August 27, 2014
    Publication date: February 19, 2015
    Inventors: Dominique Nicolas Cade, Xiongwei David He
  • Patent number: 8894896
    Abstract: A method of making garment material, the method having the steps: applying coagulant (34) to a substrate (32); applying a foam (38) of the polymeric material to the substrate (32); allowing the coagulant (34) to coagulate some of the foam (38); and removing uncoagulated foam (38) from the substrate (32) to leave a layer of coagulated polymeric material on the substrate (32).
    Type: Grant
    Filed: November 20, 2004
    Date of Patent: November 25, 2014
    Assignee: A T G Ceylon (Private) Limited
    Inventors: John Arthur Taylor, Agampodl Sunil Shantha Mendis, Mohamed Fazal Abdeen, Howard William Thomas Goth
  • Patent number: 8871129
    Abstract: A single opening permanent breast prosthesis includes an envelope made of a flexible, hermatic and biologically inert material having a flat rear surface (3) and a curved front surface (2). The prosthesis thus defines a closed pocket (5) which contains a physiological serum. There are at least two compartments (6, 7, 8) in the pocket (5) which are separated by at least one membrane (10, 11, 12) extending in the form of an arch from the front surface (2) to the rear surface (3) of the prosthesis.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: October 28, 2014
    Inventor: Franck Mojaradi
  • Patent number: 8871123
    Abstract: The present invention relates to an absorbent article including a absorbent core having a plurality of first regions and a second region, each one of said first regions being arranged in spaced relationship from each of the other first regions and each of the first regions being entirely surrounded by the second region. The present invention also relates to a method of making such a core structure.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: October 28, 2014
    Assignee: Johnson & Johnson Ind. E Com. Ltda.
    Inventors: Antonio Carlos Ribeiro de Carvalho, Ivair Luiz Duarte, Márcia Helena Teixeira Fajolli, Francisco Antonio Rimoli, Maria Márcia R. Caldas Salles
  • Patent number: 8795573
    Abstract: A medical article, such as a catheter, is formed from a blend of polyurethane and synthetic polyisoprene (SPIR). The blended medical article is preferably selected and prepared to be relatively rigid at room temperature and relatively flexible at body temperature. An intermittent catheter made from the blend provides a degree of stiffness for its insertion into the patient at room temperature. The catheter becomes softer, and therefore more comfortable, at warmer temperatures (e.g., body temperature) which reduce discomfort after insertion. Optionally, the catheter or a portion thereof can have a hydrophilic coating as to avoid the need for external lubricants. Advantageously, the blended catheter can meet the stiffness, tensile strength, and coefficient of friction requirements of intermittent catheterization applications while avoiding the risk of toxic or allergic reactions in sensitive users.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: August 5, 2014
    Assignee: C.R. Bard, Inc.
    Inventors: Ronald L. Bracken, Fung Bor Chen, Randy Tuck
  • Patent number: 8758662
    Abstract: An improved process and material for making elastomeric nitrile rubber articles is disclosed. In particular, the process and material formulation can produce nitrile rubber based articles, which exhibit force-strain characteristics that are comparable to those of natural rubber latex articles, while maintaining the tensile strength properties of nitrile rubber. The process includes an accelerator composition at the pre-cure stage having a dithiocarbamate, a thiazole, and a guanidine compound. The invention also includes an elastomeric nitrile rubber product made by the process, such as examination, surgical, or work gloves.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: June 24, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Timothy M. Lipinski
  • Publication number: 20140158943
    Abstract: A method of producing at least one of microscopic and submicroscopic particles includes providing a template that has a plurality of discrete surface portions, each discrete surface portion having a surface geometry selected to impart a desired geometrical property to a particle while being produced; depositing a constituent material of the at least one of microscopic and submicroscopic particles being produced onto the plurality of discrete surface portions of the template to form at least portions of the particles; separating the at least one of microscopic and submicroscopic particles comprising the constituent material from the template into a fluid material, the particles being separate from each other at respective discrete surface portions of the template; and processing the template for subsequent use in producing additional at least one of microscopic and submicroscopic particles.
    Type: Application
    Filed: September 12, 2013
    Publication date: June 12, 2014
    Applicant: The Regents of the University of California
    Inventor: Thomas G. Mason
  • Publication number: 20140142211
    Abstract: An elastomeric article comprising at least one elastomer and precipitated calcium carbonate particles, wherein the sphere equivalent particle size of said precipitated calcium carbonate particles is less than 1.0 ?m. The elastomeric article is preferably produced using a latex dipping process, and is particularly suitable for use as a glove, a condom, or a balloon.
    Type: Application
    Filed: April 26, 2012
    Publication date: May 22, 2014
    Applicant: Schaefer Kalk GmbH & Co. KG
    Inventors: Hein-Dieter Stoever, Eu Leong Kee, Kok Loong Chong, Mohd Yusof Bin MD ISA, Christoph Nover
  • Patent number: 8673172
    Abstract: Accelerator composition for a rubber latex derived from a conjugated diene and optionally a vinyl aromatic comonomer including: (i) a diisopropyl xanthogen polysulphide (DIXP), (ii) an alkyldithiocarbamate wherein the alkyl chain contains from 5 to 20 carbon atoms, and (iii) diphenylguanidine (DPG), a curable aqueous synthetic rubber latex composition including said accelerator composition, a process for the water-based solvent-free manufacture of synthetic shaped synthetic elastomeric articles, prepared by using the accelerator composition.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: March 18, 2014
    Assignee: Kraton Polymers U.S. LLC
    Inventor: Evert Van Jole
  • Publication number: 20140013999
    Abstract: A particulate cellulose derivative is obtained in a process of grinding and drying a moist cellulose derivative which comprises the steps of A) providing a cellulose derivative having a moisture content of from 60 to 95 percent, based on the total weight of the moist cellulose derivative, B) grinding and partially drying the moist cellulose derivative in a gas-swept impact mill; and C) contacting the ground and partially dried cellulose derivative with an additional amount of a drying gas outside the gas-swept impact mill. The obtained particulate cellulose derivative has a high untapped bulk density and a good flowability.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Yvonne M. Goerlach-Doht, Juergen Hermanns, Peter E. Pierini, Marco Grossstueck, Michael Schreck
  • Patent number: 8617447
    Abstract: The invention relates to methods of making articles of semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 31, 2013
    Assignee: Corning Incorporated
    Inventors: Glen Bennett Cook, Prantik Mazumder, Kamal Kishore Soni, Balram Suman, Christopher Scott Thomas, Natesan Venkataraman
  • Patent number: 8597277
    Abstract: Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The distal end of the sheath is maintained in the first, low cross-sectional configuration and expanded using a radial dilatation device. In an exemplary application, the sheath is utilized to provide access for diagnostic or therapeutic procedures such as ureteroscopy, cardiac electrophysiology, gastroenterology, and spinal access.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: December 3, 2013
    Assignee: Onset Medical Corporation
    Inventors: Jay Lenker, Onnik Tchulluian, Edward J. Nance
  • Patent number: 8597012
    Abstract: An automated mandrel dip coating process assembly for RTV silicone dispersions is described, including an enclosure adapted to hold a moisture-cure ambient temperature curable medium for mandrel dip molding and at least one mandrel having a surface for contacting the moisture-cure ambient temperature curable medium. An automated motive drive assembly is arranged to removably translate one or more of the mandrel(s) into contact with the moisture-cure ambient temperature curable medium in the enclosure, and to subsequently translate at least one mandrel contacted with the moisture-cure ambient temperature curable medium into at least one of (A) contact with a bubble crusher in the enclosure, and (B) disengagement from the moisture-cure ambient temperature curable medium in the enclosure and rotation of the mandrel at a vertical displacement angle of from 70° to 110°.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: December 3, 2013
    Assignee: Polyzen, Inc.
    Inventors: Tilak M. Shah, Medhadakshina Murty Peri
  • Publication number: 20130317547
    Abstract: A method for producing a pacifier teat, and a pacifier teat with a teat section which forms a hollow space and which is adjoined by a stem, wherein an elastic hollow body comprising the teat section and the stem is injection moulded or pre-formed by a dipping method, and opposite wall sections of the pre-formed hollow body are connected to each other in the region of the stem.
    Type: Application
    Filed: February 10, 2012
    Publication date: November 28, 2013
    Applicant: MAM BABYARTIKEL GESELLSCHAFT M.B.H.
    Inventor: Peter Rohrig
  • Patent number: 8591795
    Abstract: A method of making an article of a semiconducting material involves selecting a target thickness for the article and then submerging a mold into a molten semiconducting material for a submersion time effective to form a solid layer of semiconducting material over an external surface of the mold where the thickness of the solid layer is substantially equal to the target thickness. The submersion time is selected to be substantially equal to a transition time, which is determined from a plot of solid layer thickness versus submersion time for a mold having particular attributes, including mold composition, mold thickness and initial mold temperature. The transition time, and thus the submersion time, corresponds to a maximum in solid layer thickness in the solid layer thickness versus submersion time curve for the particular mold.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: November 26, 2013
    Assignee: Corning Incorporated
    Inventors: Prantik Mazumder, Balram Suman
  • Publication number: 20130295188
    Abstract: The present disclosure relates to aqueous composition comprising hydroxypropyl methyl cellulose acetate succinate (HPMCAS) polymer dispersed in water, wherein the dispersed polymer is partially neutralized with at least one alkaline material. The instant disclosure also relates to compositions for use in methods of making capsule shells endowed with bulk enteric properties. The present disclosure also relates to capsules made according with the compositions and methods of the present disclosure.
    Type: Application
    Filed: March 14, 2013
    Publication date: November 7, 2013
    Applicant: Capsugel France SAS
    Inventors: Dominique Nicolas CADE, Hugues Straub
  • Publication number: 20130281912
    Abstract: A substantially biodegradable and water soluble tampon applicator comprising: a plunger and a barrel, said plunger being of a predetermined length, and having a first end and a second end, said second end being a predetermined distance from said first end, said plunger being substantially cylindrical in shape and having a first diameter at said first end and a second diameter at said second end, wherein said first diameter tapers downwards to said second diameter, proximate said first end, said plunger further comprises a first mating portion, said barrel having a first end and a second end, said second end being a predetermined distance from said first end, said barrel being substantially cylindrical in shape and having a diameter greater than the first diameter of said plunger, proximate said first end of said barrel, there is provided a second mating portion to matingly engage said first mating portion of said plunger to maintain said plunger in relation to said barrel in a first position, proximate said f
    Type: Application
    Filed: January 6, 2012
    Publication date: October 24, 2013
    Inventor: John Mikhail
  • Patent number: 8540920
    Abstract: The invention relates to methods of making articles of semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: September 24, 2013
    Assignee: Corning Incorporated
    Inventors: Prantik Mazumder, Sergey Potapenko, Natesan Venkataraman
  • Patent number: 8518502
    Abstract: An inflatable device, in particular a device including a body having an outer surface and an inner surface, the inner surface accessible through an orifice in the body, the body including a prolamine protein that exhibits air or gas impermeability for a suitable period of time, and yet is biodegradable upon exposure to the environment. The device can be utilized as a balloon for personal uses such as toys, gifts or balloon releases at events, or as a medical device.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 27, 2013
    Inventors: Frank Bona, David A. Schiraldi
  • Publication number: 20130152943
    Abstract: Condoms, condom formers, and methods for forming condoms are disclosed. A condom includes an open end, a closed end, a tubular sheath extending from the open end to the closed end, a tip portion adapted to cover a glans of a penis, disposed adjacent to the closed end, and a plurality of raised features disposed on the tubular sheath, having a top surface area and a base surface area, wherein the total raised top surface area is greater than the total base surface area of the condom.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 20, 2013
    Applicant: ANSELL LIMITED
    Inventor: Ansell Limited
  • Publication number: 20130099418
    Abstract: A multi-piece mold for use in a method for making a slurry distributor includes a plurality of mold segments adapted to be removably secured together. The mold segments are configured such that, when the mold segments are assembled together, the assembled mold segments define a substantially continuous exterior surface adapted to be a negative image of an interior flow region of a slurry distributor molded thereupon. Each mold segment has a maximum cross-sectional area in a plane substantially transverse to a direction of movement of the mold segment along a removal path out of a respective opening of the molded slurry distributor. The maximum cross-sectional area of each mold segment is up to about 150% of the smallest area of the interior flow region of the molded slurry distributor through which the mold segment traverses when moving along the respective removal path.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 25, 2013
    Applicant: UNITED STATES GYPSUM COMPANY
    Inventor: UNITED STATES GYPSUM COMPANY
  • Patent number: 8414814
    Abstract: A biodegradable polymer stent with radiopacity and a method of making and using a stent with enhanced mechanical strength and/or controlled degradation for use in a bodily lumen is described.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: April 9, 2013
    Assignee: Biosensors International Group, Ltd.
    Inventors: Shih-Horng Su, Debashis Dutta
  • Patent number: 8162645
    Abstract: An apparatus and related method for forming a three-dimensional polymer based part including a die tool having a specified shape and size and exhibiting an exposed polymer adhering surface corresponding in configuration to a polymeric based part to be created. A volume holding bin supports a three-dimensional article including at least one exposed and pattern defining surface. A volume of a granulated polymer material is deposited into the bin and around the article. A sub-volume of the material adheres to and forms a hardened layer upon the exposed pattern defining surface, a corresponding part created having a specified thickness and matching configuration.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 24, 2012
    Inventor: Miguel A. Linares
  • Patent number: 8137606
    Abstract: A lightweight thin flexible latex glove article having a polymeric latex coating that penetrates the front portion of a knitted liner half way or more through the liner thickness and for at least a portion of the knitted liner, not penetrating the entire thickness. For example, the liner can be knitted using an 18-gauge needle with 70 to 221 denier nylon 66 multi-filament yarn. The polymer latex coating can be 0.75 to 1.25 times the thickness of the knitted liner. Over 30% reduction of glove thickness is achieved resulting in three times greater flexibility. The polymer latex coating may be foamed with 5 to 50 vol % air content. Open celled foamed latex coating may be coated with a dispersion of fluorochemical dispersion to prevent liquid permeation into the glove. The process can include steps to gel the latex emulsion at interstices of the yarn to prevent further penetration of the emulsion into the liner.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: March 20, 2012
    Assignee: Ansell Healthcare Products LLC
    Inventors: Eric Thompson, Dave Narasimhan, Jeffrey C. Moreland, Hafsah Mohd Ghazaly
  • Publication number: 20110287254
    Abstract: An improved process and material for making elastomeric nitrile rubber articles is disclosed. In particular, the process and material formulation can produce nitrile rubber based articles, which exhibit force-strain characteristics that are comparable to those of natural rubber latex articles, while maintaining the tensile strength properties of nitrile rubber. The process includes an accelerator composition at the pre-cure stage having a dithiocarbamate, a thiazole, and a guanidine compound. The invention also includes an elastomeric nitrile rubber product made by the process, such as examination, surgical, or work gloves.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 24, 2011
    Inventor: Timothy M. Lipinski
  • Patent number: 7988900
    Abstract: There is provided an artificial cardiac or heart valve, more particularly a flexible leaflet heart valve used to replace natural aortic or pulmonary valves of the heart in which the leaflet geometry is defined by a parabolic function and a method of manufacturing said artificial cardiac valves. In addition, there is provided leaflets which have geometry defined by a parabolic function.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 2, 2011
    Assignee: Aortech International PLC
    Inventor: Jason Gordon Beith
  • Patent number: 7959842
    Abstract: Techniques for forming a carbon nanotube (CNT) structure are disclosed.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: June 14, 2011
    Assignee: SNU & R&DB Foundation
    Inventors: Yong Hyup Kim, Eui Yun Jang
  • Patent number: 7858009
    Abstract: An aqueous sericin solution and a polar organic solvent are mixed together to prepare a sericin-containing solution, then the sericin-containing solution is added into a synthetic resin solution, followed by drying, to produce an synthetic leather wherein sericin is present as discrete particles of not larger than 3 ?m in diameter within the synthetic resin of a skin layer almost uniformly at least 1.0×106 particles per square centimeter. The skin layer of the synthetic leather has a soft and moist touch like that of the natural leather and is superior in moisture absorbing and releasing properties and further superior in processing stability.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: December 28, 2010
    Assignee: Seiren Co., Ltd.
    Inventors: Norihiko Yoshida, Yukari Suzuki
  • Patent number: 7858015
    Abstract: Methods for making a molded beverage container insulator from a slurry including water and a polysaccharide by presenting at least one male mold, which may have an elliptical cross section, therein and causing a portion of the slurry to temporarily adhere to the at least one mold. After a suitable period of time, removing the mold from the slurry and then removing the insulator. At such time, and particularly if the mold is not characterized as elliptical in cross section, the insulator is subject to bidirectional compression in order to collapse the same. Opposing hinge elements may be formed in the insulator, either at the time of molding or subsequently, to localize stresses resulting from the collapsing of the insulator. The resulting insulator is fully recyclable/compostable and possesses a constricting bias to mitigate container slip issues.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 28, 2010
    Inventors: Edward F. Urquhart, David A. Pierce
  • Publication number: 20100252052
    Abstract: This application describes a condom having a clitoral stimulation system (CSS) integrated to the outer surface of the condom or as a separate system that may be selectively attached to the condom.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 7, 2010
    Inventors: Janice Kettles, Andrew Hicks
  • Patent number: 7721354
    Abstract: A glove with an integrally formed arm trough has a hand portion, arm portion and a cuff portion. The arm portion is provided with a first ridge, a second ridge with a larger diameter compared to the arm portion, and a third ridge. During use, the third ridge is pushed towards the first ridge by the user to extend the second ridge away from the arm and towards the hand portion forming a liquid capturing trough while the cuff portion protects from the arm from liquid exposure. The length between the third ridge and the second ridge is larger than the length between the first and second ridge so that the trough created has a positive cone angle and a depth to sufficient to provide liquid volume capacity. The ridges are shaped as sharp edges or C-sections to provide easy forming of the liquid capturing arm trough.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: May 25, 2010
    Assignee: Ansell Healthcare Products LLC
    Inventors: Loo Liong Yu, David Mark Lucas, Ong Chin Kok, Karunagaran A/L Arumugam, Dave Narasimhan
  • Patent number: 7662334
    Abstract: A net shaped latex vacuum bag as used in the fabrication of composite structural parts having complex shapes. Liquid latex is first allowed to air dry in the form of a thin flat, flexible sheet. The latex sheet is then vacuum formed over a tool having the complex shape of the part to be fabricated and assumes the shape and configuration of the tool's outer surface. The latex sheet is then rapidly cured at an elevated temperature, so as to permanently assume the part's shape for subsequent use in forming composite structural parts of the same complex shape. In one embodiment, the latex sheet may be formed on the tool by dipping the tool in liquid latex, allowing the latex coating to dry, and cutting the dry latex coating to permit separation of the tool from the latex coating which is then used in composite part fabrication.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 16, 2010
    Assignee: The Boeing Company
    Inventors: Finley B. Miller, Steven P. DeCoux
  • Publication number: 20090278284
    Abstract: A dip-forming composition is provided, which can give a dip-formed article that exhibits good softness of touch and comfortable fittingness, an excellent tensile strength and a high flexural fatigue resistance, and which is less likely to color even when worn and subjected to working for a long time period. The above problem is solved by the dip-forming composition which is obtained by converting an organic peroxide, which is solid at 30° C. under normal pressure, to an aqueous dispersion in the presence of a surfactant and a polymeric protective colloid, adding the dispersion to a conjugated diene rubber latex, and aging the mixture. The organic peroxide is preferably dibenzoyl peroxide or dilauroyl peroxide.
    Type: Application
    Filed: July 16, 2009
    Publication date: November 12, 2009
    Inventor: Kazumi KODAMA
  • Patent number: 7611651
    Abstract: A method for manufacturing carbon nanotubes with a uniform length includes the steps of: (a) forming an array of carbon nanotubes on a substrate; (b) submerging the carbon nanotubes in liquid macromolecular material; (c) solidifying the liquid macromolecular material; (d) cutting the solidified liquid macromolecular material; and (e) removing the macromolecular material to obtain the carbon nanotubes with a uniform length. The method is simple, and carbon nanotubes with a desired length can be easily obtained. The length of the carbon nanotubes can be precisely controlled. Furthermore, each carbon nanotube is open at both ends thereof.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: November 3, 2009
    Assignees: Tsinghua University, Hon Hai Precision Industry Co.,Ltd.
    Inventors: Hua Huang, Chang-Hong Liu, Shou-Shan Fan
  • Patent number: 7374711
    Abstract: Thin-walled rubber articles for use contact with living tissue or with materials to be delivered to living tissue are prepared from aqueous latex of either natural rubber or synthetic cis-1,4-polyisoprene by vulcanization to produce both carbon-carbon and carbon-(sulfur)n-carbon crosslinks, the vulcanization being performed in the absence of any compounding components that contain secondary amine groups or any components that have a tendency to produce nitrosamines. While sulfur activators may be included, it is preferable that no sulfur accelerators at all be included. Thin-walled rubber articles formed from the latex surprisingly exhibit a combination of high tensile strength, high ultimate percent elongation, and low 500% tensile modulus. The process is particularly effective in the manufacture of thin-walled articles from synthetic cis-1,4-polyisoprene.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: May 20, 2008
    Assignee: Apex Medical Technologies, Inc.
    Inventors: Mark W. McGlothlin, Eric Schmid, Brian P. Watschke
  • Patent number: 7338624
    Abstract: A method of producing a green form for use in manufacturing a composite, ceramic ion transport membrane is provided in which first and second ceramic powder mixtures are used to produce first and second layers of the green form. The first and second ceramic powder mixtures have ceramic particles and a pore former. After formation of each of the first and second layers or after formation of the second layer, heat is applied to burn out the binder and form pores. This heating is completed prior to application of a dense layer to prevent production of defects within the dense layer. The dense layer contains an ion transport material. Defects are also prevented by grading particle size from the first layer to the dense layer. This allows the second intermediate layer to fill in larger pores of the first layer and to present a smooth surface to the dense layer. Additionally, the second ceramic powder mixture contains in part material used in forming the dense layer for thermal expansion compatibility purposes.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: March 4, 2008
    Assignee: Praxair Technology Inc.
    Inventors: Hancun Chen, Jack C. Chen, Weitung Wang
  • Patent number: 7179415
    Abstract: A method of making a non-tacky, powder-free neoprene article, preferably by dipping a former in a neoprene or neoprene copolymer latex, comprises the use of one or more anionic anti-tack agents in order to prevent any significant development of tack for a period of up to at least seven days when the article is stored at 70° C. or at least 90 days when stored at 45° C. Preferably, the article is a glove or condom further comprising a layer of hydrogel.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: February 20, 2007
    Assignee: Regent Medical Limited
    Inventors: Seng Chin Teoh, Seong Fong Chen
  • Patent number: 7112298
    Abstract: A medical device, such as a catheter shaft, having an inner lumen defined by a layer of polymer coating, and a method for forming such a medical device. In some embodiments, the method generally includes the steps of applying a polymer coating to an elongated mandrel, and constructing the remainder of the catheter shaft body around the polymer coated mandrel. In some embodiments, the polymer coating layer is made from water dispersible polymer or water soluble polymer.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: September 26, 2006
    Assignee: Scimed Life Systems, Inc.
    Inventors: Greg J. Kampa, Pu Zhou
  • Patent number: 6949276
    Abstract: A bladder shell for inflatable balls having a layer of blended synthetic latex and natural rubber latex compounded with an anti-oxidant, an activator, an accelerator, a thickening agent, a wetting agent, and a stabilizer etc. to form a low air permeability and high bounce bladder shell having thickness of between 0.25 mm to 3.0 mm. Also disclosed is a process for the preparation of the bladder shell that includes dipping former in a bath of blended natural rubber latex and synthetic latex.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: September 27, 2005
    Assignees: Enkay (India) Rubber Company, Private Limited
    Inventors: Satish Jain, Naresh Jain, Anil Jain, Vipin Jain, Jinesh Jain
  • Patent number: 6936210
    Abstract: A method of making a cannula includes providing a plurality of polymer reservoirs with each reservoir containing a polymer material and providing a nozzle mounted within each reservoir of the plurality of reservoirs. The method further includes one or more of preheating the mandrel, generating a polymer material wave from each nozzle, rotating the mandrel over the nozzles to form an initial coat on the mandrel, curing the initial coat, depositing a reinforcing material around a selected section of the mandrel and ensuring that the reinforcing material is held in place at the selected section of the mandrel. The method further includes rotating each section of the mandrel over a selected nozzle to form an additional coat, curing the additional coat, and removing the tubular structure from the mandrel.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: August 30, 2005
    Assignee: Edwards Lifesciences Corporation
    Inventor: Ross Bartholomew
  • Patent number: 6929766
    Abstract: A method of making a cannula utilizing dispense molding includes providing at least one dispense nozzle that dispenses a polymer material, providing a mandrel, moving at least one of the mandrel and at least one dispense nozzle relative to one another to produce an alternating pattern of polymer material along a longitudinal axis of the mandrel to form a tubular structure, and removing the tubular structure from the mandrel.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: August 16, 2005
    Assignee: Edwards Lifesciences Corporation
    Inventor: Ross Bartholomew
  • Patent number: 6920643
    Abstract: Pore-free rubber articles are prepared by dip-molding in a dipping medium that includes a vulcanizing agent, then by immersing the dip former in a heated liquid bath that is chemically inert. A particularly effective liquid bath is molten inorganic salt. In addition, the tensile properties of an article of vulcanized rubber can be improved to an unusually effective degree by immersing the already vulcanized article in a solution of a vulcanizing agent to cause the rubber of the article to absorb or imbibe the vulcanizing agent from the solution, and then immersing the rubber and the imbibed vulcanizing agent in a heated liquid bath to increase the degree of vulcanization.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: July 26, 2005
    Assignee: Regent Medical Limited
    Inventors: Mark W. McGlothlin, Eric V. Schmid
  • Publication number: 20040250334
    Abstract: Glove or condom formers of Mn+1AXn, wherein M is scandium, titanium, vanadium, chromium, zirconium, niobium, hafnium, and tantalum or a mixture thereof, A is aluminium (Al), silicon (Si), gallium (Ga), germanium (Ge), tin (Sn), lead (Pb) or indium (In) or a mixture thereof, X is carbon or nitrogen, and n is 1, 2 or 3, are provided. Methods for producing latex and synthetic polymer gloves and condoms with these formers are also provided.
    Type: Application
    Filed: September 19, 2003
    Publication date: December 16, 2004
    Inventors: Tamer El-Raghy, Michel W. Barsoum
  • Publication number: 20040245670
    Abstract: A method of forming an elastomeric article includes providing a former, coating the former with a coagulant composition including zinc stearate, dipping the former into a polymer composition including an elastomeric polymer and water, curing the elastomeric polymer at a temperature above the melting point of the zinc stearate, and removing the water from the polymer composition on the former to form the elastomeric article.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 9, 2004
    Inventors: Robert A. Janssen, Martin S. Shamis, William E. Conley, Sanford E. White
  • Publication number: 20040199242
    Abstract: A hybrid stent is formed which exhibits both high flexibility and high radial strength. The expandable hybrid stent for implantation in a body lumen, such as a coronary artery, consists of radially expandable cylindrical rings generally aligned on a common longitudinal axis and interconnected by one or more links. In one embodiment, a dip-coated covered stent is formed by encapsulating cylindrical rings within a polymer material. In other embodiments, at least some of the rings and links are formed of a polymer material which provides longitudinal and flexural flexibility to the stent. These polymer rings and links are alternated with metallic rings and links in various configurations to attain sufficient column strength along with the requisite flexibility in holding open the target site within the body lumen. Alternatively, a laminated, linkless hybrid stent is formed by encapsulating cylindrical rings within a polymer tube.
    Type: Application
    Filed: December 27, 2001
    Publication date: October 7, 2004
    Inventors: James Hong, Rahul Bhagat, Syed Hossainy, Santosh Prabhu, K.T. Venkateswara Rao, Ashok Shah, Srinivasan Sridharan
  • Patent number: 6797222
    Abstract: A slush molding process in which the moldable thermoplastic composition powder dosed to the mold is prepared by blending ethylene carboxylic acid copolymers or ionomers with ethylene/glycidyl acrylate or methacrylate copolymer and cross-linking promoter at a temperature and for a time that does not cause significant cross-linking prior to dosing to mold, which is held for sufficient time and temperature to cause cross-linking in-situ, and optionally, other additives including release agents.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 28, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Karlheinz Hausmann, George K. Kodokian, George W. Prejean