Patents by Inventor Stig A. Alfredsson

Stig A. Alfredsson 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 and apparatus for determining critical temperatures for corrosion
    Patent number: 4214951
    Abstract: The temperature of a corrosive electrolyte is changed in steps, and the critical temperature of corrosion of a test material is measured in terms of the temperature at which the current or voltage between an electrode of the material being tested and another electrode in the corrosive electrolyte takes a noticeable jump in value.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: July 29, 1980
    Inventors: Sven-Olof Bernhardsson, Stig A. Alfredsson