Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881026 | Method and apparatus for diagnosing abnormal state of sodium (NA)--sulfur (S) cell | Yasumasa Ishida, Motoi Wada, Hisamitu Hatoh, Yoshiteru Miyatake, Sadao Mori +1 more | 1989-11-14 |
| 4795686 | Sodium-sulfur electric cell and process for manufacturing the same | Kazuaki Yokoi, Toshihiro Yamada | 1989-01-03 |