Patents by Inventor Thomas J. Slam

Thomas J. Slam 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).

  • Purification of hydroquinone
    Patent number: 4072721
    Abstract: There is disclosed the method of preparing photographic grade hydroquinone from technical grade hydroquinone which consists of treating a solution of the technical grade hydroquinone in the presence of a palladium catalyst with hydrogen while the hydroquinone solution is at a pH between about 3 and about 6.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: February 7, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Budd H. Sturm, Thomas J. Slam