Patents by Inventor A. M. Schaffer

A. M. Schaffer 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).

  • Cracking catalyst and process
    Patent number: 4873211
    Abstract: A composition of matter, effective as cracking catalyst, comprises zeolite and a matrix material comprising aluminum phosphate, being substantially free of alumina and magnesia. A process for cracking hydrocarbon-containing feed streams having an initial boiling point of at least about 400.degree. F. (at atmospheric pressure) employs the above cracking catalyst.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: October 10, 1989
    Assignee: Phillips Petroleum Company
    Inventors: Darrell W. Walker, A. M. Schaffer