Patents by Inventor Christopher E. Knapp

Christopher E. Knapp 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).

  • Coated abrasives
    Patent number: 6797023
    Abstract: Novel coated abrasives comprising abrasive agglomerate grains characterized by a high porosity and low ratio of solid volume to nominal volume provide exceptionally useful medium to low pressure grinding characteristics.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: September 28, 2004
    Assignee: Saint-Gobain Abrasives Technology Company
    Inventors: Christopher E. Knapp, Olivier Leon-Marie Fernand Guiselin, Kenneth Lorenz
  • Coated abrasives
    Publication number: 20030213182
    Abstract: Novel coated abrasives comprising abrasive agglomerate grains characterized by a high porosity and low ratio of solid volume to nominal volume provide exceptionally useful medium to low pressure grinding characteristics.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 20, 2003
    Inventors: Christopher E. Knapp, Olivier Leon-Marie Fernand Guiselin, Kenneth Lorenz
  • Process for quenching molten ceramic material
    Patent number: 5651925
    Abstract: A process is provided that permits the rapid quenching of molten ceramics by passing a flow of the molten ceramic into a turbulent fluid flow such that the flow is broken up into particles which then solidify as they pass into and through a cyclone and are finally separated from the fluid flow and collected as dry particulate ceramic materials.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: July 29, 1997
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corporation
    Inventors: Peter J. Ashley, Larry Hill, Christopher E. Knapp, Rene G. Demers, D. C. Batchelor
  • Sintered alumina-zirconia ceramic bodies
    Patent number: 4960441
    Abstract: Useful ceramic bodies can be made by mixing zirconia powder with seeded alumina gel, drying, and firing at a high enough temperature to convert the alumina in the gel to microcrystalline alpha alumina. Abrasive grits made in this way, with a zirconia content between 15 and 30 weight percent and at least half the zirconia in the tetragonal crystal form are particularly valuable for use in grinding wheels for snagging steels.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: October 2, 1990
    Assignee: Norton Company
    Inventors: Scott W. Pellow, Ronald W. Trischuk, Christopher E. Knapp, Ralph Bauer
  • Partially stabilized zirconia bodies
    Patent number: 4565792
    Abstract: Stabilized sintered zirconia bodies are made by employing zirconia powders made from rapidly quenched co-fusions of zirconia with a stabilizing metal oxide. Finer crystallinity and higher strength is achieved in the fired body.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: January 21, 1986
    Assignee: Norton Company
    Inventor: Christopher E. Knapp