Patents by Inventor Gwo S. Swei
Gwo S. Swei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8835543Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate. The composite material may include a coupling agent including a phosphinic acid group, a phosphonic acid group or an ester derivative thereof.Type: GrantFiled: January 23, 2013Date of Patent: September 16, 2014Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: David J. Bravet, Olivier Guiselin, Gwo S. Swei, Yves Boussant-Roux
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Patent number: 8726611Abstract: A roofing membrane includes first and second layers. The first layer includes a low surface energy polymer. A method of installing the roofing membrane includes, along an edge of a first membrane, mechanically removing a portion of the first membrane extending vertically to include the first layer and a portion of the second layer to leave a flap of the first membrane, placing an edge of a second membrane to overlap the first membrane, and bonding the first membrane to the second membrane. The underside of the edge of the second membrane overlies the flap of the first membrane.Type: GrantFiled: December 23, 2009Date of Patent: May 20, 2014Assignee: Saint-Gobain Performance Plastics CorporationInventors: Gwo S. Swei, Maryann C. Kenney, Ricky Santoso, Charles Hayden
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Publication number: 20130131237Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate. The composite material may include a coupling agent including a phosphinic acid group, a phosphonic acid group or an ester derivative thereof.Type: ApplicationFiled: January 23, 2013Publication date: May 23, 2013Inventors: David J. Bravet, Olivier Guiselin, Gwo S. Swei, Yves Boussant-Roux
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Patent number: 8383702Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate. The composite material may include a coupling agent including a phosphinic acid group, a phosphonic acid group or an ester derivative thereof.Type: GrantFiled: December 13, 2007Date of Patent: February 26, 2013Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: David Bravet, Olivier Guiselin, Gwo S. Swei, Yves Boussant-Roux
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Patent number: 8337574Abstract: An abrasive product is disclosed. The abrasive product includes a binder support substrate, a binder, an abrasive material affixed to the support substrate by the binder, and an antiloading composition on the surface of the abrasive product. The antiloading composition is a lauryl sulfate. The lauryl sulfate is the only organic antiloading compound included in the antiloading composition.Type: GrantFiled: January 20, 2009Date of Patent: December 25, 2012Assignee: Saint-Gobain Abrasives, Inc.Inventors: Gwo S. Swei, Damien C. Nevoret, Patrick Yang
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Patent number: 8309645Abstract: A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20 and has a particle distribution in which 90% of the particles have a particle size not greater than 500 micrometers.Type: GrantFiled: October 4, 2007Date of Patent: November 13, 2012Assignee: Saint-Gobain Performance Plastics CorporationInventors: Gwo S. Swei, Ilya L. Rushkin, Pawel Czubarow, David Worth House, David DeCoster, Olivier Guiselin
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Publication number: 20120251021Abstract: A self-lubricating structure such as a bearing having a low coefficient of friction, a high bearing load capability, and a low abrasiveness is provided. The self-lubricating bearing has a PTFE-based sliding layer that is bonded to a metal backing layer. The sliding layer includes a PTFE-based matrix, self-lubricating fillers such as liquid crystalline polymer, and high temperature reinforcing fiber such as carbon fiber. A method for producing the self-lubricating bearing is also provided.Type: ApplicationFiled: April 4, 2011Publication date: October 4, 2012Inventor: Gwo S. Swei
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Publication number: 20120251020Abstract: A self-lubricating structure such as a bearing having a low coefficient of friction, a high bearing load capability, and a low abrasiveness is provided. The self-lubricating bearing has a PTFE-based sliding layer that is deposited on a metal backing layer. The sliding layer includes a PTFE-based matrix, self-lubricating fillers such as liquid crystalline polymer, and high temperature reinforcing fiber such as carbon fiber. A method for producing the self-lubricating bearing is also provided.Type: ApplicationFiled: April 4, 2011Publication date: October 4, 2012Inventor: Gwo S. Swei
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Patent number: 7641964Abstract: A roofing material includes a first layer including a fluoropolymer, a second layer directly bonded to and directly contacting the first layer, and a third layer underlying the second layer. The second layer includes an unfunctionalized olefinic polymer. The third layer includes a polymeric material and a filler.Type: GrantFiled: August 3, 2006Date of Patent: January 5, 2010Assignee: Saint-Gobain Performance Pastics CorporationInventors: Gwo S. Swei, Viktor V. Skatchkov, Maryann C. Kenney, David Bravet
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Publication number: 20090199487Abstract: An antiloading composition includes a first organic compound. The compound has a water contact angle criterion that is less than a water contact angle for zinc stearate. The first compound also satisfies at least one condition selected from the group consisting of a melting point Tmelt greater than about 40° C., a coefficient of friction F less than about 0.3, and an antiloading criterion P greater than about 0.3. Another embodiment includes a second organic compound, having a different water contact angle from that of the first organic compound. The composition has a particular water contact angle Wop that is determined, at least in part, by the independent Wog of each compound and the proportion of each compound in the composition. Also, an abrasive product includes the antiloading composition. A method of grinding a substrate is disclosed that includes employing effective amount of an antiloading composition. Further disclosed is a method of selecting an antiloading compound.Type: ApplicationFiled: January 20, 2009Publication date: August 13, 2009Inventors: Gwo S. Swei, Damien C. Nevoret, Patrick Yang
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Publication number: 20090093581Abstract: A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20.Type: ApplicationFiled: October 4, 2007Publication date: April 9, 2009Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Gwo S. Swei, Ilya L. Rushkin, Pawel Czubarow, David Worth House, David C. DeCoster, Olivier Guiselin
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Publication number: 20090093608Abstract: A method of forming a polymeric material includes forming a solution including at least two solvents and at least two diamines. The at least two diamines include oxydianiline (ODA) in an amount of about 50% to about 90% based on the total moles of the at least two diamines and include m-phenylenediamine (MPD) in an amount of about 10% to about 50% based on the total moles of the at least two diamines. The at least two solvents include a high polarity solvent in an amount of about 40% to about 90% based on the total weight of the at least two solvents and include a low polarity solvent in an amount of about 10% to about 60% based on the total weight of the at least two solvents. The method further includes adding pyromellitic dianhydride (PMDA) to the solution in a ratio of about 0.9 to about 1.05 based on the total moles of the at least two diamines to form a polyamic acid solution. In addition, the method includes imidizing the polyamic acid solution to form a polyimide material.Type: ApplicationFiled: October 4, 2007Publication date: April 9, 2009Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Ilya L. Rushkin, Gwo S. Swei
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Publication number: 20090053529Abstract: A roofing material includes a bitumen sheet material and a multilayer capping film. The multilayer capping film includes a first layer comprising a first fluoropolymer and a second layer underlying the first layer. The second layer includes at least 40 wt % of a second fluoropolymer and not greater than 60 wt % of an acrylic polymer. The second layer of the multilayer capping film overlies the bitumen sheet material and the first layer of the multilayer capping film forms an outer surface of the roofing material.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Maryann C. Kenney, Gwo S. Swei, Giorgio Bortolotto, Christian C. Honeker
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Publication number: 20080224366Abstract: A composite material includes polyimide material, a particulate metal oxide dispersed in the polyimide material in an amount between about 0.1 wt % and about 20.0 wt %, and a carbonaceous material dispersed in the polyimide material in an amount between about 0.0 wt % and about 45.0 wt %.Type: ApplicationFiled: December 31, 2007Publication date: September 18, 2008Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Gwo S. Swei, Ilya L. Rushkin, David Worth House, Pawel Czubarow
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Publication number: 20080153965Abstract: A composite material includes a non-polar polymer and alumina hydrate particulate. The composite material has a Heat Distortion Performance of at least about 10% relative to the non-polar polymer absent the alumina hydrate particulate.Type: ApplicationFiled: December 13, 2007Publication date: June 26, 2008Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: David Bravet, Olivier Guiselin, Gwo S. Swei, Yves Boussant-Roux
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Publication number: 20080029210Abstract: A roofing material includes a first layer including a fluoropolymer, a second layer directly bonded to and directly contacting the first layer, and a third layer underlying the second layer. The second layer includes an unfunctionalized olefinic polymer. The third layer includes a polymeric material and a filler.Type: ApplicationFiled: August 3, 2006Publication date: February 7, 2008Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventors: Gwo S. Swei, Viktor V. Skatchkov, Maryann C. Kenney, David Bravet
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Patent number: 7195658Abstract: An antiloading composition includes a first organic compound. The compound has a water contact angle criterion that is less than a water contact angle for zinc stearate. The first compound also satisfies at least one condition selected from the group consisting of a melting point Tmelt greater than about 40° C., a coefficient of friction F less than about 0.3, and an antiloading criterion P greater than about 0.3. Another embodiment includes a second organic compound, having a different water contact angle from that of the first organic compound. The composition has a particular water contact angle W°p that is determined, at least in part, by the independent W°g of each compound and the proportion of each compound in the composition. Also, an abrasive product includes the antiloading composition. A method of grinding a substrate is disclosed that includes employing effective amount of an antiloading composition. Further disclosed is a method of selecting an antiloading compound.Type: GrantFiled: October 17, 2003Date of Patent: March 27, 2007Assignee: Saint-Gobain Abrasives, Inc.Inventors: Gwo S. Swei, Damien C. Nevoret, Patrick Yang
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Patent number: 6172139Abstract: A method for making a particulate filled polymeric matrix composite film includes mixing a polymeric matrix material with a dispersion of particulate filler in a carrier liquid to form a casting composition and adjusting the viscosity of the casting composition to retard separation of the particulate filler from the composition. A layer of the viscosity-adjusted casting composition is cast on a substrate and the layer is consolidated to form the particulate filled polymer matrix composite film. Films made by the method include very thin, e.g less than 1.0 mil, fluoropolymeric matrix films highly filled with very small diameter, preferably spherical, particles for use as, e.g. dielectric substrate materials in laminar electrical circuits.Type: GrantFiled: November 2, 1993Date of Patent: January 9, 2001Assignee: World Properties, Inc.Inventors: Gwo S. Swei, David J. Arthur
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Patent number: 5624471Abstract: Waterproof coated abrasive paper made using a maker and/or size coat comprising a radiation-curable binder that is hydrophobic when polymerized.Type: GrantFiled: July 22, 1996Date of Patent: April 29, 1997Assignee: Norton CompanyInventors: Anthony C. Gaeta, Gwo S. Swei
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Patent number: 5582625Abstract: A coated abrasive backing material is provided which is suitable for heavy duty grinding applications is provided by a continuous solid resin matrix having dispersed therein an essentially isotropic fibrous web. The invention also provides a coated abrasive based on said backing.Type: GrantFiled: June 1, 1995Date of Patent: December 10, 1996Assignee: Norton CompanyInventors: Howard R. Wright, Richard Vogel, Richard Sargood, Gwo S. Swei, Jane L. Cercena