Patents by Inventor David D. Reed

David D. Reed 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-hydrocarbon copolymeric viscosity improvers containing color and stability improvers
    Patent number: 4110235
    Abstract: The color and viscosity stability of copolymeric .alpha.-olefin viscosity index improvers and of oils containing same are improved by the incorporation therein of minor amounts of N,N'-bis(2-hydroxy-5-alkylbenzyl).alpha.-.OMEGA.-diaminoethane wherein the alkyl group is a C.sub.4 to C.sub.30 alkyl group and the basic metal salts thereof.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: August 29, 1978
    Assignee: Texaco Inc.
    Inventors: James O. Waldbillig, Carmen M. Cusano, David D. Reed, Richard L. Winstead