Patents by Inventor Lewis D. Watson

Lewis D. Watson 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).

  • Ethylene copolymer compositions having improved fire retardancy
    Patent number: 4851463
    Abstract: A composition having improved fire retardancy consisting essentially of an ethylene copolymer with at least one other comonomer, an ethylene copolymer with an unsaturated carboxylic acid, an alpha-olefin polymer, a plasticizer, alumina hydrate and/or magnesium hydroxide, glass fiber, a surfactant, and an organic acid, is suitable for making building panels and other construction elements, roofing sheets, wire coatings, pipe wraps, etc.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: July 25, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Arthur W. Opsahl, Lewis D. Watson