Patents by Inventor Walter M. Douglas

Walter M. Douglas 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).

  • Mercaptan oxidation in a liquid hydrocarbon with a metal phthalocyanine catalyst
    Patent number: 4088569
    Abstract: A catalytic process for converting mercaptans is disclosed. The catalyst, comprising a metal phthalocyanine composition of matter, is prepared by reacting a 4-sulfophthalic acid with a metal salt, an ammonium donor and a phthalic anhydride or derivative thereof at 250.degree. to 325.degree. C. for one-half to ten hours.
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: May 9, 1978
    Assignee: UOP Inc.
    Inventor: Walter M. Douglas
  • Process for oxidation of mercaptans in hydrocarbon distillates and in akaline medium
    Patent number: 4078992
    Abstract: A new metal phthalocyanine catalyst is prepared by reacting a 4-sulfophthalic compound, a metal salt, an ammonium donor compound and water at reaction conditions which include heating to 255.degree. to 325.degree. C at a pressure of 1 to 100 atmospheres for one-half to ten hours. The catalyst is used to oxidize mercaptans.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: March 14, 1978
    Assignee: UOP Inc.
    Inventor: Walter M. Douglas
  • Metal phthalocyanine catalyst preparation
    Patent number: 4072630
    Abstract: A method of preparing a supported metal phthalocyanine catalyst. A solid adsorbent support or carrier material is impregnated with an alkali metal phthalocyanine solution and with a metal salt solution comprising a metal exchangeable with said alkali metal to form a desired metal phthalocyanine catalyst.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: February 7, 1978
    Assignee: UOP Inc.
    Inventor: Walter M. Douglas
  • Catalyst and method of manufacture and use thereof
    Patent number: 4049572
    Abstract: A catalyst comprising a metal phthalocyanine composition of matter is prepared by reacting a 4-sulfophthalic acid with a metal salt, an ammonium donor and a phthalic anhydride or derivative thereof at 250 to 325 C for one-half to ten hours.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: September 20, 1977
    Assignee: UOP Inc.
    Inventor: Walter M. Douglas
  • Sulfonated metal phthalocyanine catalyst
    Patent number: 4048097
    Abstract: A new metal phthalocyanine catalyst is prepared by reacting a 4-sulfophthalic compound, a metal salt, an ammonium donor compound and water at reaction conditions which include heating to 255.degree. to 325.degree. C at a pressure of 1 to 100 atmospheres for 1/2 to 10 hours. The catalyst is used to oxidize mercaptans.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: September 13, 1977
    Assignee: UOP Inc.
    Inventor: Walter M. Douglas