Patents by Inventor Koji Utsugui

Koji Utsugui 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).

  • Negative pole for a secondary cell, secondary cell using the negative pole, and negative pole manufacturing method
    Publication number: 20040175621
    Abstract: An anode for a secondary battery capable of inserting and extracting a lithium ion having a multi-layered structure including a first anode layer (2a) containing carbon as a main component; a second anode layer (3a) made of a film-like material through which a lithium component passes; and a third anode layer (4a) containing lithium and/or a lithium-containing compound as a main component. The battery capacity of the lithium ion battery is substantially increased while the higher charge-discharge efficiency and the stable cycle performance are maintained.
    Type: Application
    Filed: January 30, 2004
    Publication date: September 9, 2004
    Inventors: Jiro Iriyama, Hironori Yamamoto, Tamaki Miura, Koji Utsugui, Masato Shirakata, Mitsuhiro Mori