Patents by Inventor Norma L. Lafferty

Norma L. Lafferty 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).

  • Process for the preparation of adipic acid
    Patent number: 4902827
    Abstract: Disclosed is an improved process for the preparation of adipic acid by the air oxidation of cyclohexane in the presence of acetic acid and a catalyst system comprising cobalt and zirconium and/or hafnium.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: February 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Guy R. Steinmetz, Norma L. Lafferty, Charles E. Sumner, Jr.