Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680346 | Phosphorus atom-containing fluorinated cation exchange membrane and proton conduction type fuel cell using the same | — | 2004-01-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680346 | Phosphorus atom-containing fluorinated cation exchange membrane and proton conduction type fuel cell using the same | — | 2004-01-20 |