Patents by Inventor Kumiko Narisawa

Kumiko Narisawa 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).

  • Process for producing an electrolytic capacitor
    Patent number: 4764181
    Abstract: An electrolytic capacitor having very thin spacer layers is produced by a process in which at least two of the surfaces of an anode valve action metal foil and a cathode metal foil are coated with a photosensitive polymer resin solution; the resultant photosensitive polymer resin solution layers are solidified; the solidified photosensitive polymer resin coatings are masked with a negative or positive masking film having a desired pattern and irradiated with an actinic radiation to partly harden the photosensitive polymer resin coatings in accordance with the masking pattern; after removing the masking film, the irradiated photosensitive polymer resin coatings are developed with a developing liquid to provide spacer layers consisting of hardened portions of the photosensitive polymer resin coatings; the anode and cathode metal foils having the spacer layers are superposed on each other in such a manner that at least one spacer layer is located between the superposed anode and cathode metal foils and at least
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: August 16, 1988
    Assignees: Ube Industries Ltd., Marcon Electronics Corp. Ltd., High Man Parts Corp. Ltd.
    Inventors: Tsunetomo Nakano, Kohei Nakajima, Kazuaki Nishio, Toshio Maruyama, Hiroshi Shimada, Kiyoshi Sakamoto, Kumiko Narisawa