Patents by Inventor Mark A. Seese

Mark A. Seese 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).

  • Co-gel catalyst manufacture
    Patent number: 4499197
    Abstract: Catalytically active silica-alumina and silica-alumina-rare earth oxide cogels are prepared by reacting aluminate and silicate solutions to obtain a silica-alumina pregel, and then reacting the pregel with an acidic rare earth and/or aluminum salt solution under complete mixing conditions.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: February 12, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Mark A. Seese, Robert L. Chiang
  • Catalyst manufacture
    Patent number: 4458023
    Abstract: Zeolite containing catalysts and catalyst supports are prepared by forming and drying an aqueous slurry of zeolite, aluminum chlorhydrol and optimally clay to obtain particulate composites in which the zeolite component contains in excess of about 1 percent by weight alkali metal oxide. The particulate composites are calcined, and in some instances ion exchanged to obtain hard, attrition resistant catalytic particles.
    Type: Grant
    Filed: November 2, 1982
    Date of Patent: July 3, 1984
    Assignee: W. R. Grace & Co.
    Inventors: William A. Welsh, Mark A. Seese, Alan W. Peters
  • Hydrocarbon conversion catalyst preparation
    Patent number: 4247420
    Abstract: A dense, highly attrition resistant catalyst is prepared by reacting an alkali-metal silicate and aluminate under conditions which produce a thermally and hydrothermally stable cogel having a substantial surface area in pores ranging from about 25 to 75A.degree.. The catalyst includes excess silicate obtained as a by-product from a Type Y zeolite synthesis.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: January 27, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Joseph S. C. Dumoulin, Mark A. Seese, Edwin W. Albers
  • Silica-alumina hydrogel catalyst
    Patent number: 4226743
    Abstract: A dense, attrition resistant catalyst is prepared by precipitating a silica alumina hydrogel at high pH, and subsequently reacting the alkaline hydrogel with sufficient acid aluminum salt at a pH below 4 to obtain an acidic hydrogel slurry. The slurry is then processed into a catalyst by spray drying, washing and ion exchanging. The catalyst may include substantial quantities of clay and/or crystalline aluminosilicate zeolites.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: October 7, 1980
    Assignee: W. R. Grace & Co.
    Inventors: Mark A. Seese, Edwin W. Albers, John S. Magee, Jr.