Patents by Inventor Werner F. Heim

Werner F. Heim 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).

  • Method of metallizing a ceramic substrate
    Patent number: 4342632
    Abstract: A ceramic substrate is metallized by a method including the steps of:(A) chemically cleaning the substrate,(B) sputter etching the chemically cleaned substrate,(C) sputtering a chromium layer of about 200 angstroms in thickness onto substrate,(D) sputtering a molybdenum layer of about 3500 angstroms in thickness onto the chromium layer,(E) sputtering a copper layer of about 25,000 angstroms in thickness onto the molybdenum layer,(F) firing the coated substrate in dry hydrogen at about 1000.degree. C. for about 10 minutes,(G) plating a copper-silver brazing alloy of about 0.0003 inch in thickness onto the copper layer, and(H) firing in dry hydrogen at about 700.degree. C. for about 10 minutes.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: August 3, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Werner F. Heim, Hunter L. McDowell