Patents by Inventor Donald H. Mohr

Donald H. Mohr 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).

  • Patent number: 7790646
    Abstract: A process for converting fine catalyst slurried in heavy oil into a coke-like material from which catalytic metals can be recovered comprises mixing fine catalyst slurried in heavy oil with solvent, which causes asphaltenes in the heavy oil to precipitate from the heavy oil; separating fine catalyst and precipitated asphaltenes from the heavy oil and solvent; and converting precipitated asphaltenes to a coke-like material by pyrolizing fine catalyst and precipitated asphaltenes separated from the heavy oil.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 7, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Jose Guitian Lopez, Christopher A. Powers, Donald H. Mohr
  • Patent number: 7737068
    Abstract: A process for recovering catalytic metals from fine catalyst slurried in heavy oil comprises pyrolizing fine catalyst slurried in heavy oil to provide one or more lighter oil products and a coke-like material and recovering catalytic metals from the coke-like material.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: June 15, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Christopher A. Powers, Donald H. Mohr, Bruce E. Reynolds, Jose Guitian Lopez
  • Publication number: 20090159491
    Abstract: A process for converting fine catalyst slurried in heavy oil into a coke-like material from which catalytic metals can be recovered comprises mixing fine catalyst slurried in heavy oil with solvent, which causes asphaltenes in the heavy oil to precipitate from the heavy oil; separating fine catalyst and precipitated asphaltenes from the heavy oil and solvent; and converting precipitated asphaltenes to a coke-like material by pyrolizing fine catalyst and precipitated asphaltenes separated from the heavy oil.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: Chevron U.S.A. Inc.
    Inventors: Jose Guitian Lopez, Christopher A. Powers, Donald H. Mohr
  • Publication number: 20090163352
    Abstract: A process for recovering catalytic metals from fine catalyst slurried in heavy oil comprises pyrolizing fine catalyst slurried in heavy oil to provide one or more lighter oil products and a coke-like material and recovering catalytic metals from the coke-like material.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: Chevron U.S.A. Inc.
    Inventors: Christopher A. Powers, Donald H. Mohr, Bruce E. Reynolds, Jose Guitian Lopez
  • Publication number: 20040068150
    Abstract: A process for upgrading a Fischer-Tropsch feedstock which comprises (a) recovering from a Fischer-Tropsch reactor a Fischer-Tropsch wax fraction and a Fischer-Tropsch condensate fraction, wherein the Fischer-Tropsch condensate fraction contains alcohols boiling below about 370° C.
    Type: Application
    Filed: October 7, 2003
    Publication date: April 8, 2004
    Applicant: Chevron U.S.A. Inc.
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William J. Schinski, Michael S. Driver, William J. Cannella
  • Patent number: 6702937
    Abstract: A process for producing low pour point diesel and lubricating base oil products by bulk dewaxing a C5 plus Fischer-Tropsch syncrude, hydrofinishing the dewaxed intermediate, and recovering 120 degrees C. plus products having improved properties.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: March 9, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee
  • Patent number: 6703535
    Abstract: A process for upgrading a Fischer-Tropsch feedstock which comprises (a) recovering from a Fischer-Tropsch reactor a Fischer-Tropsch wax fraction and a Fischer-Tropsch condensate fraction, wherein the Fischer-Tropsch condensate fraction contains alcohols boiling below about 370° C.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: March 9, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William L. Schinski, Michael S. Driver, William J. Cannella
  • Publication number: 20030199719
    Abstract: A process for upgrading a Fischer-Tropsch feedstock which comprises (a) recovering from a Fischer-Tropsch reactor a Fischer-Tropsch wax fraction and a Fischer-Tropsch condensate fraction, wherein the Fischer-Tropsch condensate fraction contains alcohols boiling below about 370° C.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 23, 2003
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William L. Schinski, Michael S. Driver, William J. Cannella
  • Publication number: 20030150777
    Abstract: A process for producing low pour point diesel and lubricating base oil products by bulk dewaxing a C5 plus Fischer-Tropsch syncrude, hydrofinishing the dewaxed intermediate, and recovering 120 degrees C. plus products having improved properties.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee
  • Publication number: 20030150776
    Abstract: A process for increasing the yield of C10 plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C10 plus hydrocarbon product from the hydrofinishing zone.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William L. Schinski, Michael S. Driver
  • Patent number: 6605206
    Abstract: A process for increasing the yield of C10 plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C10 plus hydrocarbon product from the hydrofinishing zone.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 12, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee, William L. Schinski, Michael S. Driver
  • Publication number: 20020002318
    Abstract: A process for partially converting well gas to saleable products on site by disproportionation of the alkanes in the well gas into higher and lower molecular weight alkanes.
    Type: Application
    Filed: September 2, 1999
    Publication date: January 3, 2002
    Inventors: DENNIS J. O'REAR, DONALD H. MOHR, CONG-YAN CHEN, PETER J. WHITE
  • Patent number: 5155074
    Abstract: The present invention is a process for regenerating a large-pore zeolitic catalyst that has been deactivated by the formation of Group VIII metal agglomerates on the catalyst surface. In the process, the Group VIII metal agglomerates are redispersed to produce agglomerates of small size. It comprises an oxychlorination step, a nitrogen purge step and a reduction step.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: October 13, 1992
    Assignee: Chevron Research and Technology Company
    Inventor: Donald H. Mohr
  • Patent number: 5106803
    Abstract: Reforming to produce aromatics from aliphatics, using a bond zeolite catalyst containing a Group VIII metal such as platinum, has been found to be extremely sensitive to water, even at water concentrations as low as 3 ppm in the feed, unless certain catalysts having a low water sensitivity index are used. The water sensitivity index (WSI) is described and methods for making catalysts with a low WSI are described. The sulfur content of the feed to the reforming/aromatics production process is preferably below 50 parts per billion. The catalysts used in the reforming process is preferably a high crush strength catalyst and is preferably prepared by steps including treating L zeolite with a binding enhancement agent prior to binding with a binder such as silica, silica/alumina or alumina.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: April 21, 1992
    Assignee: Chevron Research and Technology Company
    Inventors: Donald H. Mohr, Charles P. Wilson, Albert S. Behan, Robert L. Chiang, Mark T. Staniulis
  • Patent number: 4855269
    Abstract: The present invention is a process for regenerating a large-pore zeolitic catalyst that has been deactivated by the formation of Group VIII metal agglomerates on the catalyst surface. In the process, the Group VIII metal agglomerates are redispersed to produce agglomerates of small size. It comprises an oxychlorination step, a nitrogen purge step and a reduction step.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: August 8, 1989
    Assignee: Chevron Research Company
    Inventor: Donald H. Mohr
  • Patent number: 4851380
    Abstract: The present invention is a process for regenerating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a combination of oxidizing conditions, reducing conditions and treatment with a halogen acid gas. These conditions are effective to agglomerate a Group VIII metal and remove sulfur. Thereafter, the catalyst is oxychlorinated to redisperse the Group VIII metal over the catalyst surface. A carbon removal step is optionally included.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: July 25, 1989
    Assignee: Chevron Research Company
    Inventors: Dean A. Van Leirsburg, Donald H. Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson
  • Patent number: 4830732
    Abstract: Reforming to produce aromatics from aliphatics, using a bound zeolite catalyst containing a Group VIII metal such as platinum, has been found to be extremely sensitive to water, even at water concentrations as low as 3 ppm in the feed, unless certain catalysts having a low water sensitivity index are used. The water sensitivity index (WSI) is described and methods for making catalysts with a low WSI are described. The sulfur content of the feed to the reforming/aromatics production process is preferably below 50 parts per billion. The catalyst used in the reforming process is preferably a high crush strength catalyst and is preferably prepared by steps including treating L zeolite with a binding enhancement agent prior to binding with a binder such as silica, silica/alumina or alumina.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: May 16, 1989
    Assignee: Chevron Research Company
    Inventors: Donald H. Mohr, Charles R. Wilson, Albert S. Behan, Robert L. Chiang, Mark T. Staniulis
  • Patent number: RE34250
    Abstract: The present invention is a process for regenerating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a combination of oxidizing conditions, reducing conditions and treatment with a halogen acid gas. These conditions are effective to agglomerate a Group VIII metal and remove sulfur. Thereafter, the catalyst is oxychlorinated to redisperse the Group VIII metal over the catalyst surface. A carbon removal step is optionally included.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: May 11, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Dean A. Van Leirsburg, Donald H. Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson