Patents by Inventor Shoko Akimoto

Shoko Akimoto 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 testing method
    Patent number: 6110355
    Abstract: A corrosion testing method in which testing conditions can be set easily and the corrosion advancing degree of the silver or silver alloys over a longer time period can be evaluated in a shorter time duration. In the present corrosion testing method, in evaluating the state of corrosion of the silver or silver alloys in a natural environment, an acceleration test is carried out by exposing a silver piece to an atmosphere of a gas mixture obtained on mixing only hydrogen sulfide and nitrogen dioxide in clean air.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: August 29, 2000
    Assignee: Sony Corporation
    Inventors: Osamu Hiramoto, Atsuko Nomiyama, Shoko Akimoto