Patents by Inventor Robert J. Zagata

Robert J. Zagata 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).

  • Attrition resistant inorganic microspheroidal particles
    Patent number: 6916891
    Abstract: Microspheroidal particles, suitable as fluidized bed catalyst supports, are prepared by incorporating a portion of small, preferably recycled, particles into a slurry of inorganic oxide sol and inorganic particles which is spray dried to form microspheroidal particles.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 12, 2005
    Assignee: The Standard Oil Company
    Inventors: George F. Salem, Robert J. Zagata
  • Attrition resistant inorganic microspheroidal particles
    Publication number: 20020160192
    Abstract: Microspheroidal particles, suitable as fluidized bed catalyst supports, are prepared by incorporating a portion of small, preferably recycled, particles into a slurry of inorganic oxide sol and inorganic particles which is spray dried to form microspheroidal particles.
    Type: Application
    Filed: January 22, 2002
    Publication date: October 31, 2002
    Inventors: George F. Salem, Robert J. Zagata
  • Method of preparation of high active phase (AMM)oxidation catalysts with improved performance and attrition resistance
    Patent number: 4659689
    Abstract: A process for the preparation of bismuth molybdate catalyst comprising (1) adding a dried mixture of metal salts of the active phase of the catalyst to an aqueous sol containing a support material for the active phase, (2) adding an acid to this slurry, (3) heating the slurry to dryness and (4) calcining the dried precursor to form the catalyst.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: April 21, 1987
    Assignee: The Standard Oil Company
    Inventors: Dev D. Suresh, Robert J. Zagata, Maria S. Friedrich, Michael J. Seely
  • Process for preparing oxidation catalysts
    Patent number: 4170570
    Abstract: A process for preparing an attrition resistant molybdenum-containing oxidation catalyst comprising; heat-treating the active catalytic components in an oxidizing atmosphere at a temperature in excess of 175.degree. C.; refluxing the heat-treated oxide catalyst in an aqueous slurry of the required amount of support material; ball milling the resulting catalyst mixture; and subjecting the ball milled catalyst to a second heat-treating step in an oxidizing atmosphere, at a temperature in excess of 200.degree. C.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: October 9, 1979
    Assignee: Standard Oil Company (Ohio)
    Inventors: Robert J. Zagata, Wilfrid G. Shaw, David R. Woodbury
  • Preparation of maleic anhydride from n-butene in a one-reactor, fluid-bed system using two different catalysts
    Patent number: 4075232
    Abstract: Maleic anhydride is prepared by reacting n-butene with molecular oxygen at a temperature of about 200.degree. to about 600.degree. C in a fluid-bed reactor using a catalyst charge containing two different catalysts--the first catalyst being one that is especially effective for preparing butadiene from the n-butylenes; and the second catalyst being one that is especially effective for preparing maleic anhydride from butadiene. Unexpectedly, substantial yields of maleic anhydride are obtained.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: February 21, 1978
    Assignee: The Standard Oil Company
    Inventors: Robert J. Zagata, Ernest C. Milberger
  • Preparation of unsaturated carboxylic esters from propylene or isobutylene
    Patent number: 4060545
    Abstract: The production of acrylates and methacrylates, made by the oxidative esterification of propylene or isobutylene wherein gaseous reactants are contacted with one or more catalysts and ethylene or an alcohol can be advantageously conducted in a single fluid bed reactor to obtain the desired ester.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: November 29, 1977
    Assignee: The Standard Oil Company
    Inventors: Arthur F. Miller, Robert J. Zagata, Robert K. Grasselli