Patents by Inventor Madhukar Rao

Madhukar Rao 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).

  • Aqueous coating compositions from polyethylene terephthalate
    Patent number: 5371112
    Abstract: Coating compositions derived from the acidolysis of polyethylene terephthalate.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: December 6, 1994
    Assignee: The Sherwin-Williams Company
    Inventors: Daniel R. Sayre, William B. Lesney, Madhukar Rao, Richard F. Tomko
  • Aerosol compositions containing non-aqueous dispersions
    Patent number: 5348992
    Abstract: This invention relates to aerosol paint and coating compositions comprising non-aqueous dispersions.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: September 20, 1994
    Assignee: The Sherwin-Williams Company
    Inventors: Paul D. Pearson, Madhukar Rao, Richard F. Tomko
  • Aerosol compositions containing non-aqueous dispersions
    Patent number: 5340871
    Abstract: This Invention relates to aerosol paint and coating compositions comprising non-aqueous dispersions.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: August 23, 1994
    Assignee: The Sherwin-Williams Company
    Inventors: Paul D. Pearson, Madhukar Rao, Richard F. Tomko
  • Aqueous coating compositions from polyethylene terephthalate
    Patent number: 5252615
    Abstract: Coating compositions derived from the alcoholysis of polyethylene terephthalate.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: October 12, 1993
    Assignee: The Sherwin-Williams Company
    Inventors: Madhukar Rao, Richard F. Tomko, Daniel R. Sayre, William B. Lesney
  • Alkyd resins and the use thereof for high solids coatings
    Patent number: 4997480
    Abstract: This invention relates to fatty acid modified alkyd resins and the use thereof in formulation of high solids interior and exterior paints capable of curing at ambient temperatures without the use of appreciable amounts of solvent. More specifically, the invention relates to high solids alkyd coatings derived from fatty acid oil modified alkyd resins having low viscosities capable of forming finishes that have good physical characteristics such as high gloss, resistance to humidity, excellent adhesion and a good hardness. These oil modified alkyd resins have number average molecular weights of less than about 6,000 and are derived from the polymerization of drying oil fatty acids, dibasic aromatic acids, polyols, at least one unsaturated monocarboxylic acid and an unsaturated monohydric alcohol.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: March 5, 1991
    Assignee: The Sherwin-Williams Company
    Inventor: Madhukar Rao
  • Non-aqueous dispersions
    Patent number: 4983716
    Abstract: This invention relates to high solids alkyds, non-aqueous dispersions, and coating compositions containing those alkyds and non-aqueous dispersions, having non-volatile materials contents greater than about 75% NVM, with very low volatile organic contents of less than 305 g/l, which exhibit excellent stability, viscosity and tack-free and dry times when formulated as air dry coating compositions.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 8, 1991
    Assignee: The Sherwin-Williams Company
    Inventors: Madhukar Rao, Richard F. Tomko, Daniel R. Sayre