Patents by Inventor William F. Ostarch

William F. Ostarch 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).

  • Patent number: 3962834
    Abstract: A simple and more efficient process is provided for producing deep, non-connected pit type, porous chromium surfaces with more constant and uniform characteristics. A substrate is initially electroplated with an excess of chromium having predetermined physical and chemical properties. The chromium surface is then diamond abrasive grit honed to within a specific excess of the desired final size, followed by D.C. reverse etching at a predetermined rate of ampere minutes per square inch, and finally honed with conventional type abrasive honing stones to a desired bearing surface. Under magnification, the resulting surface reveals a specific type and degree or percentage of plateaus and depressions, herein called porosity and a specific depth of pits. Simultaneously, with the surface treatment, the chromium plated product is obtained within a required size or dimension.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: June 15, 1976
    Assignee: Van Der Horst Corporation of America
    Inventor: William F. Ostarch