Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7140380 | Cell safety valve and cell having same | Hironori Marubayashi, Takuma Morishita, Shigeki Fujii | 2006-11-28 |
| 4783383 | Sealed type battery provided with safety valve means and method of manufacturing same | Toyoji Machida, Satoshi Narukawa, Akiyoshi Sakai, Nobuhiro Nagao, Kanji Urushihara +1 more | 1988-11-08 |