Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818640 | Carbonaceous composite product produced by joining carbonaceous materials together by tetrafluoroethylene resin, and process for producing the same | Hiroyuki Fukuda, Masatomo Shigeta, Kiyomi Ohuchi, Hisatsugu Kaji, Kuniyuki Saitoh | 1989-04-04 |
| 4814307 | Process for producing an electrode substrate which is uniform in physical properties | Masayosi Sibuya | 1989-03-21 |