Patents by Inventor Edward F. Restelli, Jr.

Edward F. Restelli, 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).

  • Treatment of arsine removal catalysts
    Patent number: 4962272
    Abstract: Supported metal oxide catalysts such as lead oxide catalysts are rejuvenated after absorbing arsenic compounds from hydrocarbon steams (such as propylene) by heating them in an inert, oxygen-free atmosphere, optionally with moisture present.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: October 9, 1990
    Assignee: Aristech Chemical Corporation
    Inventors: Leonard A. Cullo, Edward F. Restelli, Jr.
  • Catalyst comprising potassium and cesium pyrosulfates with vanadium pentoxide and anatase
    Patent number: 4931418
    Abstract: Catalyst compositions are disclosed containing potassium pyrosulfate, cesium pyrosulfate, supported on an inorganic oxide. The catalysts will selectively oxidize naphthalene and/or o-xylene to phthalic anhydride in a fluidized- or fixed-bed reactor system. Sulfur-containing gaseous promoter may be fed with the aromatic hydrocarbon to enhance selectivity.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: June 5, 1990
    Assignee: Aristech Chemical Corporation
    Inventors: Leonard A. Cullo, Elliott V. Nagle, Jr., Edward F. Restelli, Jr., Thomas J. Yogan
  • Process for the oxidation of aromatic hydrocarbons
    Patent number: 4912234
    Abstract: Catalyst compositions are disclosed containing potassium pyrosulfate, cesium pyrosulfate, supported on an inorganic oxide. The catalysts will selectively oxidize naphthalene and/or o-xylene to phthalic anhydride in a fluidized- or fixed-bed reactor system. Sulfur-containing gaseous promoter may be fed with the aromatic hydrocarbon to enhance selectivity.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: March 27, 1990
    Assignee: Aristech Chemical Corporation
    Inventors: Leonard A. Cullo, Elliott V. Nagle, Jr., Edward F. Restelli, Jr., Thomas J. Yogan
  • Crystalline magnesia-silica composites and process for producing same
    Patent number: 4721827
    Abstract: Novel aromatic alkylation catalysts are manufactured by an extended hydrothermal treatment of the precipitation product of a magnesium salt with sodium silicate in the presence of tetrapropylammonium bromide or related compound.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: January 26, 1988
    Assignee: Aristech Chemical Corportion
    Inventors: Leonard A. Cullo, Edward F. Restelli, Jr., Francis J. Shiring, III
  • Method of making anatase-titania attrition-resistant catalyst composition
    Patent number: 4705770
    Abstract: A method is disclosed for preparing titania-containing catalysts and catalyst supports that are fluidizable and attrition-resistant. By the method, a fluidizable substrate is impregnated with titanyl sulfate or a related compound. The compositions may be used to advantage in applications requiring titania-bearing catalysts or titania supports and are particularly useful in preparing fluid bed catalysts for the oxidation of o-xylene and naphthalene to phthalic anhydride.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: November 10, 1987
    Assignee: Aristech Chemical Corporation
    Inventors: Leonard A. Cullo, Elliott V. Nagle, Jr., Edward F. Restelli, Jr., Thomas J. Yogan
  • Crystalline magnesia-silica composites and process for producing same
    Patent number: 4623530
    Abstract: Novel aromatic alkylation catalysts are manufactured by an extended hydrothermal treatment of the precipitation product of a magnesium salt with sodium silicate in the presence of tetrapropylammonium bormide or related compound.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: November 18, 1986
    Assignee: United States Steel Corporation
    Inventors: Leonard A. Cullo, Edward F. Restelli, Jr., Francis J. Shiring, III
  • Process for producing a synthetic rutile from ilmentite
    Patent number: 4097574
    Abstract: Synthetic rutile is made from ilmenite by pre-oxidizing it, reducing it in a fluid bed, thereafter aeration leaching it, optionally acid leaching, and drying.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: June 27, 1978
    Assignee: United States Steel Corporation
    Inventors: Robert G. Auger, Edward F. Restelli, Jr.