Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7740963 | Liquid fuel type fuel cell system and its operating method | Okuyama Ryoichi, Nomura Eiichi | 2010-06-22 |
| 7674537 | Direct methanol type fuel cell and method of preventing elution of its fuel pole, quality control method and operation method | Okyuama Ryoichi, Watanabe Tsutomu | 2010-03-09 |