Patents by Inventor Harold D. Oltman

Harold D. Oltman 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).

  • Polymer films containing platelet particles
    Patent number: 4728478
    Abstract: Thin polymer films containing small sized platelet type filler. The polymer has a melt index of from 0.01 to 10 grams per 10 minutes at 190.degree. C. to 250.degree. C.as measured on ASTM Test No. D-1238 at a load of 1000 to 2160 grams. The preferred polymer is polycaprolactam or high density polyethylene. There is from 10 to 50 percent of a platelet filler having an average equivalent diameter of from 1 to 8 micrometers, a maximum equivalent diameter of about 25 micrometers, and an average thickness of less than 0.5 micrometers. The preferred filler is talc. The film is from 10 to 100 micrometers thick and can be a single ply or a laminate.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: March 1, 1988
    Assignee: Allied-Signal Inc.
    Inventors: William Sacks, John P. Sibilia, Abraham M. Kotliar, Harold D. Oltman, Shu P. Chen