Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5707541 | Preparation of ferrite from used dry cells | Takashi Kanemaru, Takaaki Iwasaki, Takeo Kitagawa | 1998-01-13 |
| 5498360 | Process for recycling used-up dry cells, and ferrite production process | Takashi Kanemaru, Takaaki Iwasaki, Toshio Saito, Takeo Kitagawa | 1996-03-12 |