Patents by Inventor Reginald Y. Tang

Reginald Y. Tang 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).

  • Selective conversion of aliphatic and aromatic aminonitriles and/or dinitriles into lactams
    Patent number: 4625023
    Abstract: Process for the selective conversion of dinitriles into the corresponding lactam by treating the dinitrile with an effective amount of a hydrogenation catalyst such as copper chromite in combination with a co-catalyst, such as titania, at a temperature in the range of from about 200.degree. C. to about 400.degree. C. and at a pressure of at least 50 kPa in the presence of water and hydrogen.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: November 25, 1986
    Assignee: Allied Corporation
    Inventors: Frank Mares, Reginald Y. Tang, James E. Galle, Rose M. Federici