Patents by Inventor William R. Martine

William R. Martine 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).

  • Hydrogenation of highly contaminated methylenedianiline
    Patent number: 7038088
    Abstract: This invention relates to a process for the catalytic hydrogenation of impurity laden methylenedianiline feedstocks commonly referred to a MDA-50 and MDA-60. The process for hydrogenating methylenedianiline containing at least 40% oligomer function by weight comprises: contacting the feedstock with hydrogen in the presence of a rhodium/ruthenium containing catalyst system carried on a lithium aluminate support under conditions for effecting ring hydrogenation.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: May 2, 2006
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Hao Ding, Gamini Ananda Vedage, William R. Martine, Vipul P. Dholakia