Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6523699 | Sulfonic acid group-containing polyvinyl alcohol, solid polymer electrolyte, composite polymer membrane, method for producing the same and electrode | Hiroshi Akita, Masaru Iguchi, Hiroyuki Oyanagi | 2003-02-25 |