Patents by Inventor John M. Larken

John M. Larken 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).

  • Catalytic synthesis of linear polyethylenepolyamines (polyethylenepolyamine preparation and catalyst)
    Patent number: 4578519
    Abstract: This invention is directed to thermally activated pelletted catalyst compositions comprising titania having phosphorous derived from polyphosphoric acid deposited thereon and to their use in the production of predominatly linear polyethylenepolyamines from ethylenediamine and monoethanolamine.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: March 25, 1986
    Assignee: Texaco Inc. (Parent)
    Inventors: John M. Larken, Steven H. Vanderpool