Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12397281 | Adsorbent, heavy metal removing agent, molded body using same, and water purifier | Shuji Matsunaga, Tetsuya Hanamoto, Hiroe Yoshinobu | 2025-08-26 |
| 12220682 | Composite aggregate particles, adsorbent using same, molded body and water purifier | Shuji Matsunaga, Tetsuya Hanamoto, Hiroe Yoshinobu | 2025-02-11 |
| 9033158 | Molded activated charcoal and water purifier involving same | Hiroe Yoshinobu, Satoru Arita | 2015-05-19 |
| 8949303 | Filter | Kazuo Toraichi | 2015-02-03 |
| 6962522 | Barrel polishing device | Naomichi Otani, Kazuo Yamaguchi, Akira Yokoyama | 2005-11-08 |
| 6729937 | Barrel-polishing apparatus | — | 2004-05-04 |
| 6688953 | Barrel polishing apparatus | Akitaka Matsushita | 2004-02-10 |
| 6280303 | Barrel-polishing apparatus | — | 2001-08-28 |
| 5792334 | Method of surface finishing of metal moldings | Shigesaburo Asai, Tetsuya Sakagami | 1998-08-11 |
| 5706567 | Method of surface finishing of metal moldings | Tetsuya Sakagami, Shigesaburo Asai | 1998-01-13 |
| 5516327 | Polishing method, device and buff wheel therefor | — | 1996-05-14 |