Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5516602 | Exhaust structure of storage battery | — | 1996-05-14 |
| 5500177 | Manufacturing method for batttery covers | Shuji Takahashi | 1996-03-19 |
| 5208117 | Battery and manufacturing method for battery cover | Shuji Takahashi | 1993-05-04 |
| 4898796 | Lead-acid storage battery | Hiroshi Furukawa, Toshihiro Isoi, Kenzo Kawakita | 1990-02-06 |