Patents by Inventor James A. Elkins, Jr.

James A. Elkins, Jr. 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 an alumina trihyorate catalyst
    Patent number: 5405820
    Abstract: A process for producing a novel catalyst wherein an amorphous alumina gel is formed at least on the surface of an aluminum-containing material, the gel is heated to form crystalline .alpha.- or .beta.-alumina trihydrate and the trihydrate is sulfided, the product of said process, and the method of producing mercaptans from alcohols or ethers and hydrogen sulfide at elevated temperature in the presence of said novel catalyst, are disclosed herein.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 11, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Roger T. Clark, James A. Elkins, Jr.
  • Selective synthesis of mercaptans and catalyst therefor
    Patent number: 5283369
    Abstract: A process for producing a novel catalyst wherein an amorphous alumina gel is formed at least on the surface of an aluminum-containing material, the gel is heated to form crystalline .alpha.- or .beta.-alumina trihydrate and the trihydrate is sulfided, the product of said process, and the method of producing mercaptans from alcohols or ethers and hydrogen sulfide at elevated temperature in the presence of said novel catalyst, are disclosed herein.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: February 1, 1994
    Assignee: Elf Atochem North America, Inc.
    Inventors: Roger T. Clark, James A. Elkins, Jr.