Patents by Inventor Yuichiro Takayama

Yuichiro Takayama 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).

  • Anticorrosive circuit for a buried structure
    Patent number: 3959664
    Abstract: A cathodic protection, anticorrosive circuit comprises a diode connection of a transistor or a Schotkky diode interconnected between a buried structure to be protected and a galvanic anode or the like so that even when the difference in potential between them is relatively low, an effective forward or anticorrosion current may flow while positively preventing the reverse current which causes the corrosion of the buried structure.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: May 25, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiiti Kosoegawa, Kazuo Fujimoto, Yoshimi Tanaka, Yuichiro Takayama, Hirotsugu Hattori