Patents by Inventor Thomas A. Doris

Thomas A. Doris 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).

  • Tracer mixture for use with laser hardened optics
    Patent number: 5472536
    Abstract: A pyrotechnic mixture for use in tracer rounds of projectiles to increase sibility under high speed conditions when viewed through laser hardened optics, comprising, in percentages by weight, an admixture of 20% to 40% magnesium, 10% to 30% strontium nitrate, 3% to 8% sodium nitrate, 3% to 20% barium peroxide and 1% to 5% viton. Additional ingredients that increase the pyrotechnic effectiveness are 0% to 5% aluminum, 0% to 15% potassium perchlorate, 0% to 5% manganese dioxide, 0% to 10% iron oxide as Fe.sub.2 O.sub.3, 0% to 15% potassium nitrate, 0% to 10% Teflon and 0% to 1% ethyl cellulose.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: December 5, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas A. Doris, Raymond Martin