Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7022238 | Immersion type membrane filter | Shiro Tanso, Naoki Murakami, Nobuo Hayashi, Seiji Okuda | 2006-04-04 |
| 6214382 | Hydrophilic film and process for producing the same | Kiyoshi Ando, Yasuo Shimizu | 2001-04-10 |
| 5474680 | Polysulfone porous hollow fiber | — | 1995-12-12 |
| 5472601 | Hollow fiber filter | — | 1995-12-05 |
| 5232597 | Polysulfone porous hollow fiber | — | 1993-08-03 |
| 5021201 | Process for preparing uniform discoid particles | Michito Tsunomori | 1991-06-04 |
| 5015423 | Method of making uniform polymer particles | Michito Tsunomori | 1991-05-14 |
| 4668299 | Inorganic composite material and process for preparing the same | Tsutomu Nanao | 1987-05-26 |
| 4612119 | Hollow fiber filter medium and process for preparing the same | — | 1986-09-16 |
| 4584280 | Porous ceramic thin film and process for preparing the same | Tsutomu Nanao | 1986-04-22 |
| 4579594 | Inorganic composite material and process for preparing the same | Tsutomu Nanao | 1986-04-01 |
| 4339334 | Tubular membrane separation apparatus end joint seal | Michinobu Izumi | 1982-07-13 |
| 4262041 | Process for preparing a composite amphoteric ion exchange membrane | Seiichi Mori, Masaaki Shimokawa | 1981-04-14 |