Patents by Inventor Alan R. Berry

Alan R. Berry 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).

  • Wear-resistant, nonabrading tic article and process for making
    Patent number: 3959557
    Abstract: A wear-resistant, nonabrasive metal article, such as a thread guide, comprising a plain carbon steel substrate with a thin, dense, continuous coating of titanium nitride, having a thickness of about 1 to 5 microns, chemically vapor deposited at reduced pressure on said steel substrate, and preferably a thin, continuous, smooth, titanium carbide coating, having a thickness of about 5 to 25 microns, chemically vapor deposited at reduced pressure on said nitride coating, the carbide coating having HK.sub.50 hardness of 3600 to 3900 and a surface finish of 0.2 to 0.5 micron.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: May 25, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Alan R. Berry