Patents by Inventor Douglas G. Haynes, Jr.

Douglas G. Haynes, Jr. 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).

  • Alumina bonded abrasive for cast iron
    Patent number: 5139536
    Abstract: This invention concerns the discovery that sol-gel process allumina abrasive grains provides superior performance in bonded abrasives for grinding cast iron. In a preferred form it is disclosed that bonded abrasives of sol-gel process alumina abrasives in combination with other abrasive grains such as those of silicon carbide and fused alumina also provide superior grinding of cast iron.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: August 18, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas G. Haynes, Jr.
  • Alumina bonded abrasive for cast iron
    Patent number: 5139539
    Abstract: This invention concerns the discovery that sol-gel process alumina abrasive grain provides superior performance in bonded abrasives for grinding cast iron. In a preferred form it is disclosed that bonded abrasives of sol-gel process alumina abrasives in combination with other abrasive grains such as those of silicon carbide and fused alumina also provide superior grinding of cast iron.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: August 18, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas G. Haynes, Jr.
  • Alumina bonded abrasive for cast iron
    Patent number: 4988370
    Abstract: This invention concerns the discovery that sol-gel process alumina abrasive grain provides superior performance in bonded abrasives for grinding cast iron. In a preferred form it is disclosed that bonded abrasives of sol-gel process alumina abrasives in combination with other abrasive grains such as those of silicon carbide and fused alumina also provide superior grinding of cast iron.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: January 29, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas G. Haynes, Jr.
  • Alumina bonded abrasive for cast iron
    Patent number: 4883501
    Abstract: This invention concerns the discovery that sol-gel process alumina abrasive grain provides superior performance in bonded abrasives for grinding cast iron. In a preferred form it is disclosed that bonded abrasives of sol-gel process alumina abrasives in combination with other abrasive grains such as those of silicon carbide and fused alumina also provide superior grinding of cast iron.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: November 28, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas G. Haynes, Jr.
  • Alumina bonded abrasive for cast iron
    Patent number: 4800685
    Abstract: This invention concerns the discovery that sol-gel process alumina abrasive grain provides superior performance in bonded abrasives for grinding cast iron. In a preferred form it is disclosed that bonded abrasives of sol-gel process alumina abrasives in combination with other abrasive grains such as those of silicon carbide and fused alumina also provide superior grinding of cast iron.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: January 31, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas G. Haynes, Jr.