Patents by Inventor Thomas Stone Croft

Thomas Stone Croft 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).

  • Polyurethane/polyurea elastomers
    Patent number: 5688860
    Abstract: Polyurethane/urea elastomers having an isocyanate equivalent index below 100, preferably from about 15 to about 80; containing an effective amount of polyisocyanate component, and an effective amount of an isocyanate reactive component comprising at least one polyamine and at least one polyol, wherein said elastomer contains from about 1 to about 199 equivalent percent amine per isocyanate equivalent.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: November 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas Stone Croft