Patents by Inventor Bernard George Kinker

Bernard George Kinker 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).

  • Process for preparing continuously variable-composition copolymers
    Patent number: 6140431
    Abstract: A process for the preparation of continuously variable-composition copolymers by effecting gradual changes in monomer composition during the polymerization is disclosed. Poly(meth)acrylate copolymers made by the process of the present invention have improved lubricating oil additive properties, for example, as pour point depressants, when compared to related polymer additives made by conventional means.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Rohm and Haas Company
    Inventors: Bernard George Kinker, Joseph Martin Bollinger, Robert Howard Gore, David Arthur Pierce
  • Viscosity index improving additives for phosphate ester-containing hydraulic fluids
    Patent number: 5863999
    Abstract: Polymer compositions derived from selected alkyl (meth)acrylate ester monomers used in certain weight ratios to provide improved viscosity control and low temperature performance characteristics in phosphate ester aircraft hydraulic fluids is disclosed. Polymer compositions for use as viscosity index improving additives in aircraft hydraulic fluids contain from 40 to 100 weight percent (C.sub.1 -C.sub.10)alkyl (meth)acrylate and zero to 60 weight percent (C.sub.11 -C.sub.20)alkyl (meth)acrylate monomer units. Preferred polymer compositions based on 40 to 70 weight percent (C.sub.1 -C.sub.10)alkyl (meth)acrylate and 30 to 60 weight percent (C.sub.11 -C.sub.15)alkyl (meth)acrylate monomer units combine good solubility in the phosphate ester hydraulic fluids with good viscosity control at low and high temperatures.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: January 26, 1999
    Assignee: Rohm and Haas Company
    Inventors: Bernard George Kinker, Robert Howard Gore, Charles William Hyndman, Bridget Marie Stevens
  • Viscosity index improving additives for phosphate ester-containing hydraulic fluids
    Patent number: 5817606
    Abstract: Polymer compositions derived from selected alkyl (meth)acrylate ester monomers used in certain weight ratios to provide improved viscosity control and low temperature performance characteristics in phosphate ester aircraft hydraulic fluids is disclosed. Polymer compositions for use as viscosity index improving additives in aircraft hydraulic fluids contain from 40 to 100 weight percent (C.sub.1 -C.sub.10)alkyl (meth)acrylate and zero to 60 weight percent (C.sub.11 -C.sub.20)alkyl (meth)acrylate monomer units. Preferred polymer compositions based on 40 to 70 weight percent (C.sub.1 -C.sub.10)alkyl (meth)acrylate and 30 to 60 weight percent (C.sub.11 -C.sub.15)alkyl (meth)acrylate monomer units combine good solubility in the phosphate ester hydraulic fluids with good viscosity control at low and high temperatures.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: October 6, 1998
    Assignee: Rohm and Haas Company
    Inventors: Bernard George Kinker, Robert Howard Gore, Charles William Hyndman, Bridget Marie Stevens
  • Additive for lubricating oil
    Patent number: 5696066
    Abstract: A lubricating oil composition includes from 0.01 weight per cent to 2 weight per cent of a polymer that includes repeating units derived from a (C.sub.8 -C.sub.15)alkyl (meth)acrylate monomer and 98 weight per cent to 99.99 weight per cent of a vegetable oil or a polyol ester.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: December 9, 1997
    Assignee: Rohm and Haas Company
    Inventors: Bernard George Kinker, Bridget Marie Stevens, Jerry William Washel