Patents by Inventor Alan O. Humphreys

Alan O. Humphreys 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).

  • Reducing abrasive wear in abrasion resistant coatings
    Patent number: 7632323
    Abstract: An abrasion resistant coating and method are provided wherein the abrasion resistant coating contains both ductile and brittle components. The abrasion resistant coating is initially applied to a substrate and is further conditioned such that the wear which occurs at the interface of the abrasion resistant coating and the abrasive environment is ductile wear, as opposed to brittle wear, such that the wear which occurs at said interface is minimized and the service life of the abrasion resistant coating extended.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: December 15, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Partha Ganguly, Alan O. Humphreys
  • Reducing abrasive wear in wear resistant coatings
    Patent number: 7544412
    Abstract: An abrasion resistant coating and method are provided wherein the abrasion resistant coating contains both ductile and brittle components having a bimodal size distribution. The abrasion resistant coating is initially applied to a substrate in contact with an abrasive environment. The abrasive resistant coating having a bimodal size distribution results in the minimized exposure of the ductile components of the wear surface to the abrasive environment such that the life of the abrasive resistant coating is extended.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: June 9, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Alan O. Humphreys, Partha Ganguly, Demosthenis Pafitis