Patents by Inventor Robert Eugene Gramera

Robert Eugene Gramera 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).

  • Flame retardant polyurethane foams
    Patent number: 3957702
    Abstract: Polyurethane foams and their method of preparation, more specifically, polyurethane foams derived from the reaction of organic polyisocyanates and starch polyethers or starch polyether hydrolysates which contain chemically bound phosphorus.
    Type: Grant
    Filed: September 8, 1971
    Date of Patent: May 18, 1976
    Assignee: CPC International Inc.
    Inventors: Hyman Max Molotsky, Robert Eugene Gramera