Patents by Inventor Kenneth E. MacPhee

Kenneth E. MacPhee 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-based elastomeric material
    Patent number: 4689385
    Abstract: The invention disclosed relates to an elastomeric polyurethane-based material which is resistant to penetration by chemical-warfare agents and as such is suitable for use in protective clothing such as facemasks. The novel materials are made according to a process which comprises reacting a saturated hydroxyl-terminated polyol with a polyisocyanate.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: August 25, 1987
    Assignee: Her Majesty the Queen in right of Canada, as represented by Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Kenneth E. MacPhee, John L. Barton