Patents by Inventor Wash Kostinko

Wash Kostinko 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 chromate conversion coatings for heat-treated aluminum alloys
    Patent number: 5123978
    Abstract: An improved method of coating 7000 series aluminum alloys, which are difflt to coat uniformly, with a coating resistant to long term corrosion in a salt spray environment is disclosed. By using a chromate solution of very low pH and applying that solution first as a cleaner, followed by brush application to form the final coating, an extended resistance to corrosion at least 2 to 3 times the usual duration is achieved readily.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: June 23, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Lionel J. Balin, Wash Kostinko