Patents by Inventor Harshadkumar M. Shah
Harshadkumar M. Shah 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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Publication number: 20230331968Abstract: A composition comprising 10 to 50 wt% wood pulp fiber and 45 to 85 wt% thermoplastic polymer wherein the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679.Type: ApplicationFiled: November 21, 2022Publication date: October 19, 2023Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Granlund, David E. Fish
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Publication number: 20200406505Abstract: A composition including 6 to 50 weight percent wood pulp fiber and 45 to 93.45 weight percent thermoplastic polymer. In some embodiments, the average dispersion of the wood pulp fibers within the thermoplastic polymer is equal to or greater than 90% as determined by the Dispersion Test. In some embodiments, the dilution level for detection in a bang at 40° C. is equal to or less than 450 as determined by ASTM E679. In some embodiments, the composition further includes 0.5 to 5 weight percent of an additive, such as a compatibilizer, a coupling agent, an anti-oxidant, and/or a lubricant. In some embodiments, the wood pulp fiber is bleached chemical wood pulp fiber.Type: ApplicationFiled: September 16, 2020Publication date: December 31, 2020Applicant: International Paper CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, David E. Fish, Neil R. Granlund, Jeffrey J. Cernohous
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Publication number: 20200216624Abstract: A composite material includes a thermoplastic polymer matrix throughout which cellulose pulp fibers and filler material are dispersed. The composite may be in solid (e.g. pellet) form, or molten form. The presence of cellulose pulp fibers unexpectedly reduces cycle time, and/or unexpectedly improves certain properties, when the composite is used in injection molding. A method for molding a part includes providing a solid composite that includes thermoplastic polymer, filler material, and cellulose pulp fibers to an injection molding system; melting the polymer to produce a molten mixture; and injecting the molten mixture into a mold. Another method for molding a part includes injecting a molten mixture of thermoplastic polymer, filler material, and cellulose pulp fibers into a mold; and removing the formed part from the mold after a cycle time at least 10% less than that required when using a comparable molten mixture that excludes the pulp fibers.Type: ApplicationFiled: March 13, 2020Publication date: July 9, 2020Applicant: INTERNATIONAL PAPER COMPANYInventors: Robert T. Hamilton, Harshadkumar M. Shah, Jorge Cortes, Hugh West, Rob Banning
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Publication number: 20200048444Abstract: A composition comprising 10 to 50 wt % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679.Type: ApplicationFiled: April 18, 2019Publication date: February 13, 2020Applicant: International Paper CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Granlund, David E. Fish
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Publication number: 20200048435Abstract: A composition comprising 10 to 50 weight % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the composition has a brightness of at least 20 as measured by the Brightness Test. The wood pulp fiber can be bleached chemical wood pulp fiber. The brightness may be at least 30 as measured by the Brightness Test.Type: ApplicationFiled: April 18, 2019Publication date: February 13, 2020Applicant: International Paper CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Granlund, David E. Fish
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Publication number: 20190084185Abstract: A composition including 6 to 50 weight percent wood pulp fiber and 45 to 93.45 weight percent thermoplastic polymer. In some embodiments, the average dispersion of the wood pulp fibers within the thermoplastic polymer is equal to or greater than 90% as determined by the Dispersion Test. In some embodiments, the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679. In some embodiments, the composition further includes 0.5 to 5 weight percent of an additive, such as a compatibilizer, a coupling agent, an anti-oxidant, and/or a lubricant. In some embodiments, the wood pulp fiber is bleached chemical wood pulp fiber.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Applicant: International Paper CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, David E. Fish, Neil R. Granlund, Jeffrey J. Cernohous
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Patent number: 9617687Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.Type: GrantFiled: June 8, 2009Date of Patent: April 11, 2017Assignee: International Paper CompanyInventors: Christopher A. Mann, David G Marsh, Robert T. Hamilton, Charles E Miller, Harshadkumar M. Shah
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Patent number: 9328231Abstract: A composition comprising 10 to 50 wt % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the average dispersion of the fibers within the thermoplastic polymer composition is equal to or greater than 90% as determined by the Dispersion Test. The pulp can be bleached chemical wood pulp fiber.Type: GrantFiled: September 27, 2012Date of Patent: May 3, 2016Assignee: Weyerhaeuser NR CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Ganlund, David E. Fish
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Patent number: 8791178Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethylammonium chloride). The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.Type: GrantFiled: May 22, 2013Date of Patent: July 29, 2014Assignee: Weyerhaeuser NR CompanyInventors: S. Ananda Weerawarna, Harshadkumar M. Shah
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Patent number: 8722773Abstract: A composition comprising 65 to 90 weight percent kraft chemical wood pulp fibers and a thermoplastic polymer and a method of making the composition.Type: GrantFiled: June 27, 2011Date of Patent: May 13, 2014Assignee: Weyerhaeuser NR CompanyInventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey Jacob Cernohous, Neil R. Granlund, David E. Fish
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Publication number: 20130338269Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethylammonium chloride). The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.Type: ApplicationFiled: May 22, 2013Publication date: December 19, 2013Inventors: S. Ananda Weerawarna, Harshadkumar M. Shah
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Patent number: 8461233Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethyl ammonium)chloride. The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.Type: GrantFiled: June 13, 2012Date of Patent: June 11, 2013Assignee: Weyerhaeuser NR CompanyInventors: S. Ananda Weerawarna, Harshadkumar M. Shah
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Publication number: 20130005859Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly (diallyldimethyl ammonium)chloride. The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.Type: ApplicationFiled: June 13, 2012Publication date: January 3, 2013Applicant: WEYERHAEUSER NR COMPANYInventors: S. Ananda Weerawarna, Harshadkumar M. Shah
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Publication number: 20120208933Abstract: A composition comprising 65 to 90 weight percent kraft chemical wood pulp fibers and a thermoplastic polymer and a method of making the composition.Type: ApplicationFiled: June 27, 2011Publication date: August 16, 2012Applicant: WEYERHAEUSER NR COMPANYInventors: Robert T. HAMILTON, Harshadkumar M. Shah, Jeffrey Jacob Cernohous, Neil R. Granlund, David E. Fish
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Publication number: 20100307702Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Applicant: Weyerhaeuser NR CompanyInventors: Christopher A. Mann, David G. Marsh, Robert T. Hamilton, Charles E. Miller, Harshadkumar M. Shah
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Publication number: 20100163200Abstract: A wet-laid wood pulp product containing cellulose pulp fibers and elongate precipitated calcium carbonate having a diameter of 0.015 to 0.6 microns at its maximum diameter and a length of 1 to 10 microns and the calcium carbonate being incorporated within the sheet and a method for making the product.Type: ApplicationFiled: December 31, 2008Publication date: July 1, 2010Applicant: WEYERHAEUSER COMPANYInventors: Michael J. Dougherty, Amar Neogi, Harshadkumar M. Shah, Andrew J. Campbell
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Publication number: 20100163199Abstract: A wet-laid wood pulp product containing cellulose pulp fibers and elongate precipitated calcium carbonate having a diameter of 0.015 to 0.6 microns at its maximum diameter and a length of 1 to 10 microns and the calcium carbonate being incorporated within the sheet and a method for making the product.Type: ApplicationFiled: December 31, 2008Publication date: July 1, 2010Applicant: WEYERHAEUSER COMPANYInventors: Michael J. Dougherty, Amar N. Neogi, Harshadkumar M. Shah, Andrew J. Campbell