Patents by Inventor Ralph O. Kerr

Ralph O. Kerr 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 preparing anhydride from alkanes
    Patent number: 4202826
    Abstract: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb. Cu, Mo, Ni, Co and Cr. Preferred are those compositions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: May 13, 1980
    Assignee: Denka Chemical Corporation
    Inventor: Ralph O. Kerr
  • Preparation of dicarboxylic anhydrides
    Patent number: 4167516
    Abstract: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr and one or more of Y, Sm, Tb or Eu. Preferred are those compositions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: September 11, 1979
    Assignee: Denka Chemical Corporation
    Inventor: Ralph O. Kerr
  • Process of preparing anhydrides from alkanes
    Patent number: 4152338
    Abstract: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr. Preferred are those compositions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: May 1, 1979
    Assignee: Denka Chemical Corporation
    Inventor: Ralph O. Kerr
  • Process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4152339
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the Group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn preferably with an alkali or alkaline earth metal.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: May 1, 1979
    Assignee: Denka Chemical Corporation
    Inventors: Ralph O. Kerr, Bruno J. Barone
  • Catalyst and process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4123388
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an alkali or alkaline earth metal.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: October 31, 1978
    Assignee: Denka Chemical Corporation
    Inventors: Ralph O. Kerr, Bruno J. Barone
  • Oxidation catalysts and process for preparing anhydride from alkanes
    Patent number: 4105586
    Abstract: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr. Preferred are those compostions containing in addition one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
    Type: Grant
    Filed: February 10, 1977
    Date of Patent: August 8, 1978
    Assignee: Denka Chemical Corporation
    Inventor: Ralph O. Kerr
  • Process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4097498
    Abstract: A vapor phase process for converting normal C.sub.4 hydrocarbons to maleic anhydride using novel catalyst compositions comprising as components vanadium, phosphorus, an element selected from the group of U, W, or a mixture of elements from the group Zn, Cr, U, W, Cd, Ni, B or Si.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: June 27, 1978
    Assignee: Denka Chemical Corporation
    Inventors: Bruno J. Barone, Ralph O. Kerr
  • Process for the vapor phase oxidation of benzene to maleic anhydrides
    Patent number: 4081460
    Abstract: Molybdenum - vanadium - oxygen oxidation catalyst for producing maleic anhydride from benzene is regenerated and stabilized in situ by the addition of up to 0.0012 gram mole of phosphorus per gram mole of vanadium in the vanadium - molybdenum - oxygen catalyst.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: March 28, 1978
    Assignee: Denka Chemical Corporation
    Inventors: Ralph O. Kerr, Gabe W. Strybos, Jr.
  • Process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4071539
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sr, preferably with an alkali or alkaline earth metal.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: January 31, 1978
    Assignee: Denka Chemical Corporation
    Inventors: Ralph O. Kerr, Bruno J. Barone
  • Vanadium phosphorus oxygen oxidation catalysts useful for preparing anhydrides from alkanes
    Patent number: 4056487
    Abstract: A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e. g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr. Preferred are those compositions containing in additiion one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: November 1, 1977
    Assignee: Petro-Tex Chemical Corporation
    Inventor: Ralph O. Kerr
  • Catalyst and process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4049574
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an alkali or alkaline earth metal.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: September 20, 1977
    Assignee: Petro-Tex Chemical Corporation
    Inventors: Ralph O. Kerr, Bruno J. Barone
  • Catalyst for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 4018709
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, an element selected from the group of U, W, or a mixture of elements from the group Zn, Cr, U, W, Cd, Ni, B or Si.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: April 19, 1977
    Assignee: Petro-Tex Chemical Corporation
    Inventors: Bruno J. Barone, Ralph O. Kerr
  • Catalyst preparative method
    Patent number: 4016105
    Abstract: C.sub.4 vanadium - phosphorus oxidation catalysts for producing maleic acid are prepared in an aqueous phosphoric acid solution using a reducing agent comprising an organic acid or aldehyde and a secondary alcohol such as oxalic acid and ethanol in a mole of 1:1 to 3 respectively, in which an inorganic vanadium compound such as V.sub.2 O.sub.5 is dissolved and reduced to vanadium of 5.sup.+ valency or less.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: April 5, 1977
    Assignee: Petro-Tex Chemical Corporation
    Inventor: Ralph O. Kerr
  • Catalyst treatment
    Patent number: 4006168
    Abstract: Molybdenum - vanadium - oxygen oxidation catalyst for producing maleic anhydride from benzene is regenerated and stabilized by the addition of a compound of Mo, Ni, Co, Mn or U, preferably a volatile compound, to the catalyst, after a decline in activity.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: February 1, 1977
    Assignee: Petro-Tex Chemical Corporation
    Inventor: Ralph O. Kerr
  • Catalyst and process for preparing maleic anhydride from C.sub.4 hydrocarbons
    Patent number: 3980585
    Abstract: A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an alkali or alkaline earth metal.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: September 14, 1976
    Assignee: Petro-Tex Chemical Corporation
    Inventors: Ralph O. Kerr, Bruno J. Barone
  • Catalyst treatment
    Patent number: RE30430
    Abstract: Molybdenum - vanadium - oxygen oxidation catalyst for producing maleic anhydride from benzene is regenerated and stabilized by the addition of a compound of Mo, Ni, Co, Mn or U, preferably a volatile compound, to the catalyst, after a decline in activity.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: November 4, 1980
    Assignee: Denka Chemical Corporation
    Inventor: Ralph O. Kerr