Patents by Inventor Paul G. Gemeinhardt

Paul G. Gemeinhardt 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).

  • Organic polyisocyanates
    Patent number: 3936483
    Abstract: A polyisocyanate composition comprising a mixture of from about 10 percent to about 90 percent by weight of toluene diisocyanate and the balance a mixture of polyphenyl-polymethylene-polyisocyanates which latter are preferably the refined condensation product of aniline and formaldehyde. These polyisocyanate compositions are eminently suitable as isocyanate precursors for the production of high rise, thin section cellular polyurethane moldings.
    Type: Grant
    Filed: July 28, 1970
    Date of Patent: February 3, 1976
    Assignee: Mobay Chemical Corporation
    Inventor: Paul G. Gemeinhardt