Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821430 | Method of treating reverse osmosis membrane element, and reverse osmosis membrane module | Terutaka Watanabe, Masahiko Hirose, Hisao Hachisuka, Mark Wilf, Craig R. Bartels +1 more | 2004-11-23 |
| 6533937 | Methods of running and washing spiral wound membrane modules | Tetsurou Adachi, Hajimu Hisada, Tomomi Ohara, Toshiyuki Kawashima, Ichirou Kawada | 2003-03-18 |
| 6432310 | Methods of running and washing spiral wound membrane module | Hajimu Hisada, Tomomi Ohara, Ichirou Kawada | 2002-08-13 |
| 6402956 | Treatment system and treatment method employing spiral wound type membrane module | Hajimu Hisada, Ichirou Kawada | 2002-06-11 |