Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5750285 | Life indicator and lead-acid storage battery with life indicator | Shigeru Sano, Aya Nishino | 1998-05-12 |
| 5485744 | Sulfuric acid concentration sensor for lead storage battery | Shigeru Sano | 1996-01-23 |