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).

  • Publication number: 20200406505
    Abstract: 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: Application
    Filed: September 16, 2020
    Publication date: December 31, 2020
    Applicant: International Paper Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, David E. Fish, Neil R. Granlund, Jeffrey J. Cernohous
  • Publication number: 20200216624
    Abstract: 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: Application
    Filed: March 13, 2020
    Publication date: July 9, 2020
    Applicant: INTERNATIONAL PAPER COMPANY
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jorge Cortes, Hugh West, Rob Banning
  • Publication number: 20200048444
    Abstract: 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: Application
    Filed: April 18, 2019
    Publication date: February 13, 2020
    Applicant: International Paper Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Granlund, David E. Fish
  • Publication number: 20200048435
    Abstract: 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: Application
    Filed: April 18, 2019
    Publication date: February 13, 2020
    Applicant: International Paper Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Granlund, David E. Fish
  • Publication number: 20190084185
    Abstract: 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: Application
    Filed: November 15, 2018
    Publication date: March 21, 2019
    Applicant: International Paper Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, David E. Fish, Neil R. Granlund, Jeffrey J. Cernohous
  • Patent number: 9617687
    Abstract: 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: Grant
    Filed: June 8, 2009
    Date of Patent: April 11, 2017
    Assignee: International Paper Company
    Inventors: Christopher A. Mann, David G Marsh, Robert T. Hamilton, Charles E Miller, Harshadkumar M. Shah
  • Patent number: 9328231
    Abstract: 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: Grant
    Filed: September 27, 2012
    Date of Patent: May 3, 2016
    Assignee: Weyerhaeuser NR Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey J. Cernohous, Neil R. Ganlund, David E. Fish
  • Patent number: 8791178
    Abstract: 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: Grant
    Filed: May 22, 2013
    Date of Patent: July 29, 2014
    Assignee: Weyerhaeuser NR Company
    Inventors: S. Ananda Weerawarna, Harshadkumar M. Shah
  • Patent number: 8722773
    Abstract: 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: Grant
    Filed: June 27, 2011
    Date of Patent: May 13, 2014
    Assignee: Weyerhaeuser NR Company
    Inventors: Robert T. Hamilton, Harshadkumar M. Shah, Jeffrey Jacob Cernohous, Neil R. Granlund, David E. Fish
  • Publication number: 20130338269
    Abstract: 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: Application
    Filed: May 22, 2013
    Publication date: December 19, 2013
    Inventors: S. Ananda Weerawarna, Harshadkumar M. Shah
  • Patent number: 8461233
    Abstract: 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: Grant
    Filed: June 13, 2012
    Date of Patent: June 11, 2013
    Assignee: Weyerhaeuser NR Company
    Inventors: S. Ananda Weerawarna, Harshadkumar M. Shah
  • Publication number: 20130005859
    Abstract: 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: Application
    Filed: June 13, 2012
    Publication date: January 3, 2013
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: S. Ananda Weerawarna, Harshadkumar M. Shah
  • Publication number: 20120208933
    Abstract: 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: Application
    Filed: June 27, 2011
    Publication date: August 16, 2012
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Robert T. HAMILTON, Harshadkumar M. Shah, Jeffrey Jacob Cernohous, Neil R. Granlund, David E. Fish
  • Publication number: 20100307702
    Abstract: 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: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Applicant: Weyerhaeuser NR Company
    Inventors: Christopher A. Mann, David G. Marsh, Robert T. Hamilton, Charles E. Miller, Harshadkumar M. Shah
  • Publication number: 20100163200
    Abstract: 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: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Applicant: WEYERHAEUSER COMPANY
    Inventors: Michael J. Dougherty, Amar Neogi, Harshadkumar M. Shah, Andrew J. Campbell
  • Publication number: 20100163199
    Abstract: 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: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Applicant: WEYERHAEUSER COMPANY
    Inventors: Michael J. Dougherty, Amar N. Neogi, Harshadkumar M. Shah, Andrew J. Campbell