Patents by Inventor Hajime Kawada

Hajime Kawada 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).

  • Electrolytic capacitor with ceramic coated contact surface
    Patent number: 5847919
    Abstract: An electrolytic capacitor of the present invention is so constituted that a capacitor element steeped with an electrolytic solution containing quaternary ammonia salts is accommodated in an armor case of which aperture is sealed with a sealing body. To achieve the above object, an external terminal of the electrolytic capacitor has a contact surface contacting with the sealing body and being coated by a ceramic coating layer.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: December 8, 1998
    Assignee: Nippon Chemi-Con Corporation
    Inventors: Makoto Shimizu, Hajime Kawada, Hidehiko Itoh