Patents by Inventor Omer E. Curtis, Jr.

Omer E. Curtis, Jr. 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).

  • Dicyclopentadiene polyester resins
    Patent number: 4246367
    Abstract: The invention disclosed is for a method of preparing unsaturated polyester resins containing high amounts of dicyclopentadiene. These polyester resins are useful in curable liquid compositions containing them together with a monomeric copolymerizable component. Such compositions may be used at ambient or elevated temperature, in casting, laminating or molding techniques known to the polyester resin art.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: January 20, 1981
    Assignee: United States Steel Corporation
    Inventor: Omer E. Curtis, Jr.
  • Dicyclopentadiene polyester resins
    Patent number: 4233432
    Abstract: The invention disclosed is for a method of preparing unsaturated polyester resins containing high amounts of dicyclopentadiene. These polyester resins are useful in curable liquid compositions containing them together with a monomeric copolymerizable component. Such compositions may be used at ambient or elevated temperature, in casting, laminating or molding techniques known to the polyester resin art.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: November 11, 1980
    Assignee: United States Steel Corporation
    Inventor: Omer E. Curtis, Jr.
  • Production of polyanhydride epoxide prepolymer compositions
    Patent number: 4034014
    Abstract: Polyanhydrides are produced by a novel bulk polymerization procedure from maleic monomers and alkyl styrenes. The polyanhydrides, of low molecular weight and containing maleic monomer to alkyl styrene in a ratio greater than 1 to 1, are particularly useful as hardeners for epoxy resin-containing compositions and give rise to epoxy compositions which result in cured products exhibiting high heat distortion temperatures and excellent electrical and shelf life properties.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: July 5, 1977
    Assignee: Allied Chemical Corporation
    Inventors: Omer E. Curtis, Jr., Harold W. Tuller, Charles T. O'Neill, Ralph W. Nussbaum