Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810597 | Fuel cell comprising a device for detecting the concentration of methanol | Teruo Kumagai, Tomoichi Kamo, Seiji Takeuchi, Kazuo Iwamoto, Kunko Kitami +1 more | 1989-03-07 |