Patents by Inventor David S. Fetterman

David S. Fetterman 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).

  • Recovery of molybdenum
    Patent number: 4405572
    Abstract: Molybdenum catalyst employed in the epoxidation of an olefin with an organic hydroperoxide preferably the epoxidation of propylene, is recovered from the bottoms fraction by adding aqueous alkaline material to the bottoms fraction and separating the aqueous phase. The molybdenum can be recovered from the aqueous phase by acidification and precipitating it as an insoluble compound.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: September 20, 1983
    Assignee: MorChem Products, Inc.
    Inventors: Calvin E. Moore, Mark E. Hutchinson, David S. Fetterman