Patents by Inventor Ramesh Gujarathi

Ramesh Gujarathi 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).

  • Preparation and use of composite of rubber and carbon black aggregates and articles of manufacture, including tires, having a component comprised thereof
    Patent number: 6800126
    Abstract: This invention relates to preparation and use of a rubber/carbon black composite comprised of at least one elastomer which contains a dispersion therein of carbon black aggregates. Such carbon black is formed by preparing a pre-blend comprised of uncompacted carbon black aggregates and oil and/or aqueous latex of, preferably, a low molecular weight diene-based elastomer particles, followed by blending said pre-blend with an aqueous emulsion of diene-based elastomer particles and/or with an organic solution of a diene-based elastomer, and/or with solid diene-based elastomers, and recovery therefrom of a solid rubber/carbon black composite comprised of said diene-based elastomer, (which may include butyl rubber, EPDM rubber and thermoplastic polymers), which contains a dispersion therein of said carbon black aggregates having an apparent density significantly lower than the specific gravity of said carbon black aggregates and significantly lower than compacted carbon black aggregates.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: October 5, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Fredrick Lewis Magnus, Ramesh Gujarathi
  • Preparation and use of composite of rubber and carbon black aggregates and articles of manufacture, including tires, having a component comprised thereof
    Publication number: 20030158325
    Abstract: This invention relates to preparation and use of a rubber/carbon black composite comprised of at least one elastomer which contains a dispersion therein of carbon black aggregates. Such carbon black is formed by preparing a pre-blend comprised of uncompacted carbon black aggregates and oil and/or aqueous latex of, preferably, a low molecular weight diene-based elastomer particles, followed by blending said pre-blend with an aqueous emulsion of diene-based elastomer particles and/or with an organic solution of a diene-based elastomer, and/or with solid diene-based elastomers, and recovery therefrom of a solid rubber/carbon black composite comprised of said diene-based elastomer, (which may include butyl rubber, EPDM rubber and thermoplastic polymers), which contains a dispersion therein of said carbon black aggregates having an apparent density significantly lower than the specific gravity of said carbon black aggregates and significantly lower than compacted carbon black aggregates.
    Type: Application
    Filed: January 16, 2003
    Publication date: August 21, 2003
    Inventors: Fredrick Lewis Magnus, Ramesh Gujarathi