Patents by Inventor Walter Kosar
Walter Kosar 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: 9839881Abstract: The invention relates to a porous separation article having a fluoropolymer or polyamide binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. The resulting article is a formed multicomponent, interconnected web, with porosity. The separation article is useful in water purification, as well as in the separation of dissolved or suspended materials in both aqueous and non-aqueous systems in industrial uses. The separation article can function at ambient temperature, as well as at elevated temperatures.Type: GrantFiled: October 1, 2013Date of Patent: December 12, 2017Assignee: Arkema Inc.Inventors: Sean M. Stabler, Thomas F. Roland, David A. Seiler, Ramin Amin-Sanayei, Walter Kosar
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Patent number: 9707524Abstract: The invention relates to a polymer membrane composition having improved water flux and stable pore size. The water flux is improved by increasing the hydrophilicity of the membrane using a matrix polymer blended with controlled architecture amphiphilic block copolymers. Preferred membranes are those having a fluoropolymer matrix and acrylic amphiphilic block copolymers. The addition of the amphiphilic block copolymers are especially useful in microfiltration and ultra filtration membranes when used in water filtration.Type: GrantFiled: October 9, 2009Date of Patent: July 18, 2017Assignee: Arkema Inc.Inventors: Walter Kosar, Noah E. Macy, Scott C. Schmidt, Jason S. Ness, Jennifer Biscarat
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Patent number: 9327247Abstract: The invention relates to caustic resistant membranes formed by solvent casting a blend of one or more polyvinylidene fluoride polymers with one or more acrylic polymers.Type: GrantFiled: October 29, 2007Date of Patent: May 3, 2016Assignee: Arkema Inc.Inventor: Walter Kosar
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Publication number: 20150303336Abstract: The invention provides a weatherable composite including a moisture barrier system having a moisture vapor transmission rate at or below 1×10?2 g/m2/day, at least one weatherable layer or coating, and a substrate that is disposed between the moisture barrier system and the weatherable layer or coating. The weatherable composite may be adhered to one or both sides (e.g., front and back) of a photovoltaic thin-film cell or organic light emitting diode such that the weatherable layer(s) or coating side(s) of the weatherable composite is exposed to the environment. The weatherable composite protects the device from both moisture and UV exposure.Type: ApplicationFiled: February 7, 2013Publication date: October 22, 2015Inventors: Amy A. Lefebvre, Gregory S. O'Brien, Walter KOSAR, Kurt A. WOOD
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Publication number: 20150231576Abstract: The invention relates to a porous separation article having a fluoropolymer or polyamide binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. The resulting article is a formed multicomponent, interconnected web, with porosity. The separation article is useful in water purification, as well as in the separation of dissolved or suspended materials in both aqueous and non-aqueous systems in industrial uses. The separation article can function at ambient temperature, as well as at elevated temperatures.Type: ApplicationFiled: October 1, 2013Publication date: August 20, 2015Inventors: Sean M. Stabler, Thomas F. Roland, David A. Seiler, Ramin Amin-Sanayei, Walter Kosar
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Publication number: 20140144833Abstract: The Invention relates to a membrane formed from a blend of high molecular weight polyvinylidene fluoride (PVDF) (>580,000 Mw) with low molecular weight PVDF (<580,000 Mw). Porous membranes of average pore size from 5 nm to 100 microns made from the blend show improved water permeability compared to membranes formed from a single Mw PVDF.Type: ApplicationFiled: August 1, 2012Publication date: May 29, 2014Applicant: Arkema Inc.Inventor: Walter Kosar
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Patent number: 8182912Abstract: The invention relates to a coating composition comprising a radiation grafted functionalized fluoropolymer. This coating is preferably, in the form of a powder coating. The coating can be used on inorganic substrates, especially un-primed metals. The invention also relates to the coated inorganic substrate and to the use of the coating composition to protect the inorganic substrate, especially from corrosion.Type: GrantFiled: October 19, 2005Date of Patent: May 22, 2012Assignees: Arkema France, Arkema Inc.Inventors: Anthony Bonnet, Michael Werth, Walter Kosar, Scott Gaboury, Ophelie Rousseau
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Publication number: 20120073632Abstract: The invention relates to architectural substrates coated with a polyvinylidene fluoride (PVDF) dispersion coating to produce a weatherable material. One specific use is as a PVDF coating on a frontsheet or backsheet of a photovoltaic module for capturing and using solar radiation. The polyvinylidene fluoride coating is exposed to the environment and provides chemical resistance, low water vapor transmission, electrical insulation, and UV light protection.Type: ApplicationFiled: June 9, 2010Publication date: March 29, 2012Applicant: Arkema Inc.Inventors: Walter Kosar, Kurt A. Wood, Wayne Skilton, Gregory S. O'Brien, Mark A. Aubart
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Publication number: 20110207841Abstract: The invention relates to a polymer membrane composition having improved water flux and stable pore size. The water flux is improved by increasing the hydrophilicity of the membrane using a matrix polymer blended with controlled architecture amphiphilic block copolymers. Preferred membranes are those having a fluoropolymer matrix and acrylic amphiphilic block copolymers. The addition of the amphiphilic block copolymers are especially useful in microfiltration and ultra filtration membranes when used in water filtration.Type: ApplicationFiled: October 9, 2009Publication date: August 25, 2011Applicant: Arkema Inc.Inventors: Walter Kosar, Noah E. Macy, Scott C. Schmidt, Jason S. Ness, Jennifer Biscarat
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Publication number: 20110017661Abstract: The invention relates to caustic resistant membranes formed by solvent casting a blend of one or more polyvinylidene fluoride polymers with one or more acrylic polymers.Type: ApplicationFiled: October 29, 2007Publication date: January 27, 2011Applicant: Arkema Inc.Inventor: Walter Kosar
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Publication number: 20090155570Abstract: The invention relates to a coating composition comprising a radiation grafted functionalized fluoropolymer. This coating is preferably, in the form of a powder coating. The coating can be used on inorganic substrates, especially un-primed metals. The invention also relates to the coated inorganic substrate and to the use of the coating composition to protect the inorganic substrate, especially from corrosion.Type: ApplicationFiled: October 19, 2005Publication date: June 18, 2009Applicant: Arkema FranceInventors: Anthony Bonnet, Michael Werth, Walter Kosar, Scott Gaboury, Ophelie Rousseau