Patents by Inventor Shripal Sharma

Shripal Sharma 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: 20060249050
    Abstract: The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present. The present invention also describes a method for modifying talc particles involving contacting a tertiary or quaternary amine with talc particles. The present invention further describes a talc created by the process of contacting a tertiary or quaternary amine with talc particles. The present invention additionally describes a paper product having a modified talc filler wherein the modified talc filler has been contacted with a tertiary or quaternary amine.
    Type: Application
    Filed: December 16, 2005
    Publication date: November 9, 2006
    Applicant: Luzenac America, Inc.
    Inventors: Shripal Sharma, Jorge Yordan, Vicente Lasmarias, Jordan Kortmeyer, Alexis Layne, Jason Reynolds
  • Patent number: 6977027
    Abstract: The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present. The present invention also describes a method for modifying talc particles involving contacting a tertiary or quaternary amine with talc particles. The present invention further describes a talc created by the process of contacting a tertiary or quaternary amine with talc particles. The present invention additionally describes a paper product having a modified talc filler wherein the modified talc filler has been contacted with a tertiary or quaternary amine.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: December 20, 2005
    Assignee: Luzenae America, Inc.
    Inventors: Shripal Sharma, Jorge Yordan, Vicente Lasmarias, Jordan Kortmeyer, Alexis Layne, Jason Reynolds
  • Patent number: 6824651
    Abstract: This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: November 30, 2004
    Assignee: Luzenec America, Inc.
    Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne
  • Publication number: 20040065419
    Abstract: The present invention describes a method for removing contaminants from a recycled paper fiber slurry comprising adding a cationized mineral to the paper fiber slurry to form complexes between the cationized mineral and the contaminants and separating the complexes from the paper fibers.
    Type: Application
    Filed: April 7, 2003
    Publication date: April 8, 2004
    Inventors: Vicente Lasmarias, Shripal Sharma, Jordan Kortmeyer, Peter Biza, Egon Gaksch
  • Publication number: 20030205344
    Abstract: This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper.
    Type: Application
    Filed: March 31, 2003
    Publication date: November 6, 2003
    Applicant: Luzenac America, Inc.
    Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne
  • Publication number: 20030143144
    Abstract: The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present.
    Type: Application
    Filed: September 5, 2002
    Publication date: July 31, 2003
    Applicant: Luzenac America, Inc.
    Inventors: Shripal Sharma, Jorge Yordan, Vicente Lasmarias, Jordan Kortmeyer, Alexis Layne, Jason Reynolds
  • Publication number: 20030096143
    Abstract: The present invention discloses a method of treating talc particles that will improve talc's wettability and/or talc's affinity to cellulosic fibers. The method also includes changing the charge of the talc particles from slightly anionic to cationic. The present invention, while modifying certain of talc's characteristics, also preserves talc's suitability as a pitch or stickie control in the paper making process. The process of the present invention includes the steps of coating the surface of talc particles with a metal hydroxide and then coating the surface of the talc particles with a cationic polymer.
    Type: Application
    Filed: September 5, 2002
    Publication date: May 22, 2003
    Applicant: Luzenac America, Inc.
    Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne, Edward McCarthy
  • Patent number: 6565646
    Abstract: This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: May 20, 2003
    Assignee: Luzenac America, Inc.
    Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne