Patents by Inventor John M. Corkill

John M. Corkill 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).

  • Detergent compositions containing sodium aluminosilicate builders
    Patent number: 4605509
    Abstract: Detergent compositions containing aluminosilicate ion exchange materials as builders are provided. The aluminosilicate builders are characterized by the speed and efficiency with which they remove hardness ions from water.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: August 12, 1986
    Assignee: The Procter & Gamble Company
    Inventors: John M. Corkill, Bryan L. Madison, Michael E. Burns
  • Detergent composition
    Patent number: 4274975
    Abstract: Detergent compositions containing aluminosilicate ion exchange materials as builders are provided. The aluminosilicate builders are characterized by the speed and efficiency with which they remove hardness ions from water.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: June 23, 1981
    Assignee: The Procter & Gamble Company
    Inventors: John M. Corkill, Bryan L. Madison, Michael E. Burns
  • Intake and exhaust manifolds
    Patent number: 4170203
    Abstract: A multi-fuel internal combustion engine block, head and manifold assembly having a plurality of intake ports and exhaust ports communicating with a plurality of cylinders through one side of the assembly includes a low profile intake and exhaust manifold construction wherein separate, generally U-shaped intake and exhaust manifolds of generally elliptical cross-section communicate with the intake and exhaust ports, respectively, each of the manifolds including a planar face in contact with the face of the other manifold, the faces being of the same size and of a length corresponding to at least 50% of the total length of the intake manifold and of a width equal to at least 25% of the periphery of the intake manifold to facilitate operation on leaded gasoline, leadfree gasoline, or bottled gas.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: October 9, 1979
    Assignee: Caterpillar Tractor Co.
    Inventors: Sam R. Congram, John M. Corkill