Patents by Inventor Mark N. Pearman

Mark N. Pearman 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).

  • Corrosion-resistant bismuth brass
    Patent number: 5637160
    Abstract: There is provided a machinable .alpha.+.beta. brass containing bismuth and phosphorous. By maintaining the phosphorous content within a critical range, the alloy exhibits good elevated temperature tensile elongation in the temperature range of 100.degree. C.-350.degree. C. without a decrease in machinability due to phosphide formation. In preferred embodiments, the alloy further contains a tin addition for enhanced corrosion resistance. The combination of tin and phosphorous provides enhanced corrosion resistance to the alloy than could be predicted from either addition alone.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: June 10, 1997
    Assignee: Olin Corporation
    Inventors: Andrew J. Brock, John F. Breedis, Jack Crane, Julius C. Fister, Frank N. Mandigo, David D. McDevitt, Mark N. Pearman, Ronald N. Caron