Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300643 | Method for producing hydrogen and apparatus for supplying hydrogen | Kiyoshi Otsuka, Sakae Takenaka, Kazuyuki Iizuka | 2007-11-27 |
| 6869585 | Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen | Kiyoshi Otsuka, Kazuyuki Iizuka | 2005-03-22 |