Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5518834 | Cylindrical air-cell | Hiroshi Yoshizawa, Isao Kubo, Shigeto Noya, Takafumi Fujiwara, Nobuo Eda | 1996-05-21 |
| 5384214 | Manufacturing of zinc-alkaline batteries | Sachiko Sugihara, Akira Ohta | 1995-01-24 |
| 5308374 | Method of manufacturing zinc-alkaline batteries | Hiroshi Yoshizawa, Yoshiaki Nitta, Sachiko Sugihara | 1994-05-03 |
| 5168018 | Method of manufacturing zinc-alkaline batteries | Hiroshi Yoshizawa, Yoshiaki Nitta, Sachiko Sugihara | 1992-12-01 |
| 5128222 | Zinc-alkaline batteries | Hiroshi Yoshizawa, Yoshiaki Nitta, Sachiko Sugihara | 1992-07-07 |
| 4861688 | Zinc-alkaline battery | Kanji Takata, Ryoji Okazaki, Toyohide Uemura, Keiichi Kagawa | 1989-08-29 |
| 4735876 | Zinc-alkaline battery | Ryoji Okazaki, Kanji Takata, Tsukasa Ohira | 1988-04-05 |