Patents by Inventor Carl E. Ward

Carl E. Ward 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: 6916768
    Abstract: The present invention relates to grease gelling agents and greases having low noise characteristics. The greases of the present invention may also exhibit good low shear stability and good heat resistance, as well as the low noise characteristics. The novel grease compositions of the present invention comprise a grease gelling agent comprises a mixture of ?80 weight percent diureas and 0.1-20 weight percent polyureas.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: July 12, 2005
    Assignee: Chevron U.S.A. Inc.
    Inventors: Carl E. Ward, Carlos E. Littlefield
  • Publication number: 20040167045
    Abstract: The present invention relates to grease gelling agents and greases having low noise characteristics. The greases of the present invention may also exhibit good low shear stability and good heat resistance, as well as the low noise characteristics. The novel grease compositions of the present invention comprise a grease gelling agent comprises a mixture of ≧80 weight percent diureas and 0.1-20 weight percent polyureas.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 26, 2004
    Inventors: Carl E. Ward, Carlos E. Littlefield
  • Patent number: 4978386
    Abstract: 2-(3-substituted phenyl)-3-amino-2-cyclopentenone derivatives. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also at low dosages as plant growth regulating agents.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: December 18, 1990
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4663466
    Abstract: Processes for alkylating certain 3-oxo-4-substituted phenyl-5-amino-2,3-dihydrofurans and 2,3-dihydrothiophenes. The process effects replacement of the 5-amino group with a new amino group having the desired substitution. The products are useful as herbicides.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: May 5, 1987
    Assignee: Chevron Research Company
    Inventors: Patricia B. Pomidor, Carl E. Ward
  • Patent number: 4643762
    Abstract: 5-Amino-3-oxo-4-(substituted-phenyl)-4-pyrroline and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: February 17, 1987
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4606756
    Abstract: Herbicidal 2-(azaheterocycle)-5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: August 19, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4596595
    Abstract: 5-Amino-3-oxo-4-(3-substituted-phenyl)-2,3-dihydrothiophene and derivatives thereof. The compounds exhibit herbicidal activity. At low dosages the compounds exhibit plant-growth regulating activity.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: June 24, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4568377
    Abstract: 5-Amino-2-aryl-3-oxo-4-(substituted-phenyl)-2,3-dihydrofuran and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity with respect to grassy and broadleaf weeds and have improved crop safety.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: February 4, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4568375
    Abstract: 2-Halo and 2-alkoxy-5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofuran and derivatives thereof. The 2-alkoxy and 2-fluoro compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also at low dosages as plant growth regulating agents. The 2-bromo, chloro and iodo compounds are primarily useful as intermediates for the 2-alkoxy and 2-fluoro analogs.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: February 4, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4568376
    Abstract: 5-Amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofuran and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also at low dosages as plant growth regulating agents.
    Type: Grant
    Filed: April 16, 1985
    Date of Patent: February 4, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4568378
    Abstract: 5-cycloalkylamino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofuran and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also at low dosages as plant growth regulating agents.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: February 4, 1986
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4537623
    Abstract: Herbicidal 2-(oxaheterocycle or thiaheterocycle)-5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: August 27, 1985
    Assignee: Chevron Research Company
    Inventor: Carl E. Ward
  • Patent number: 4497650
    Abstract: Novel tetrahydrotriazine compounds which exhibit utility as terrestrial herbicides. Also included are herbicidal compositions containing these compounds and a method of controlling terrestrial weeds with the herbicidal compositions.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: February 5, 1985
    Assignee: Union Carbide Corporation
    Inventors: Carl E. Ward, Robert V. Berthold