Patents by Inventor Roger John Crossfield

Roger John Crossfield 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).

  • Yarn finish formulation
    Patent number: 4098702
    Abstract: A yarn finish containing a mineral oil of viscosity below that desired and a polymeric viscosity index improver such as polyisobutylene in an amount to raise the viscosity of the finish to the level desired.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: July 4, 1978
    Assignee: George A. Goulston Company, Inc.
    Inventors: Roger John Crossfield, Norman Robert Cohen
  • Yarn finish formulations
    Patent number: 4098703
    Abstract: Yarn finishes, particularly of the coning oil type, containing a hydrocarbon soluble, long molecular chain polymeric viscosity index improver, such as polyisobutylene, are disclosed herein.
    Type: Grant
    Filed: June 2, 1976
    Date of Patent: July 4, 1978
    Assignee: George A. Goulston Company, Inc.
    Inventors: Roger John Crossfield, Norman Robert Cohen
  • Yarn finish formulations
    Patent number: 3977979
    Abstract: Yarn finishes, particularly of the coning oil type, containing a hydrocarbon soluble, long molecular chain polymeric viscosity index improver, such as polyisobutylene, are disclosed herein.
    Type: Grant
    Filed: September 14, 1973
    Date of Patent: August 31, 1976
    Assignee: George A. Goulston Company, Inc.
    Inventors: Roger John Crossfield, Norman Robert Cohen