Patents by Inventor Melvin P. Mathisen

Melvin P. Mathisen 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).

  • Quartz tank member and method of production thereof
    Patent number: 5322539
    Abstract: A quartz tank member produced by a new method of production having continuous inner corner surfaces formed through bending and welding processes with welded seams being smooth without any hills, valleys, pits, crevasses, or irregularities therein.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: June 21, 1994
    Assignee: Desert Glassworks, Inc.
    Inventors: Melvin P. Mathisen, David L. Butler, Jeffrey F. White