Patents by Inventor Edward T. Marquis

Edward T. Marquis 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).

  • Method of preparing polyaminopolyphenylmethanes
    Patent number: 4036880
    Abstract: Covers a method of preparing diaminodiphenylmethanes and higher homologues thereof which comprises the step of condensing aniline and formaldehyde in the presence of a molybdenum boride catalyst.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: July 19, 1977
    Assignee: Texaco Development Corporation
    Inventors: Edward T. Marquis, Robert M. Gipson, Lewis W. Watts, Jr.