Patents by Inventor Keiji Akuto

Keiji Akuto 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).

  • Patent number: 5346785
    Abstract: A photochargeable air battery is disclosed possessing a negative electrode 22 which discharges by oxidation of metal material 22a, a positive electrode 21 comprising a oxygen catalyst, electrolyte 23 filling the inside of battery case 27 between negative electrode 22 and positive electrode 21, and battery case 27 housing positive electrode 21, negative electrode 22 and electrolyte 23 in addition to possessing light receptor 22a which injects light into negative electrode 22. As a result, discharging is performed by oxidation of metal material 22a comprising negative electrode 22, while charging is performed by reducing the oxidized metal material by means of irradiating light from light receptor 27a onto the metal material 22 which is oxidized by this discharging.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: September 13, 1994
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Keiji Akuto, Naoki Kato, Tsutomu Ogata, Masaaki Takeuchi
  • Patent number: 4889777
    Abstract: A secondary battery has positive and negative electrode members juxtaposed on a substantially identical plane. End faces of the positive and negative electrode members oppose each other at a distance. A substrate fixes and supports the positive and negative electrode members. A cover member defines, with the substrate, a sealed chamber includng the positive and negative electrode members. An electrolyte is sealed in the sealed chamber. The battery can be manufactured a through deposition of electrode materials.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: December 26, 1989
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Keiji Akuto