Patents by Inventor Emmanuel F. E. Arretz

Emmanuel F. E. Arretz 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).

  • Catalytic process for the production of mercaptans from thioethers
    Patent number: 4927972
    Abstract: A catalytic process for the production of mercaptans from thioethers, which comprises reacting a thioether, in which the sulfur atom of the thioether function is bonded, on the one hand to a tertiary carbon atom and, on the other hand, to a primary or secondary carbon atom, with hydrogen sulfide in the presence of an appropriate acid catalyst, especially an aluminosilicate or an ion-exchange resin.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: May 22, 1990
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventor: Emmanuel F. E. Arretz