Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9651302 | Purification method and purification apparatus for feed air in cryogenic air separation | Masato Kawai | 2017-05-16 |
| 8690990 | Method of purifying air | Masato Kawai, Hiroyuki Takei | 2014-04-08 |
| 8366806 | Pre-purification unit of cryogenic air separation unit, hydrocarbon adsorbent, and method of pre-treating feed air | Tatsuya Hidano, Masato Kawai | 2013-02-05 |
| 7993431 | Gas purifier apparatus and method for gas purification | Masato Kawai | 2011-08-09 |
| 7931736 | Pre-purification unit of cryogenic air separation unit, hydrocarbon adsorbent, and method of pre-treating feed air | Tatsuya Hidano, Masato Kawai | 2011-04-26 |
| 7749306 | Method of restarting feed air purifier | Masato Kawai | 2010-07-06 |
| 6824588 | Apparatus and method for purifying air used in cryogenic air separation | Kazuhiko Fujie, Yasuo Tatsumi, Masato Kawai | 2004-11-30 |
| 6660240 | Gas processing agent and manufacturing method therefor, gas purification method, gas purifier and gas purification apparatus | Sakurai Toshihiko, Yusuke Nakaya, Masato Kawai, Nobuhiro Okamura | 2003-12-09 |
| 6471749 | Gas purification method | Masato Kawai, Shigeo Tooyama | 2002-10-29 |
| 6048509 | Gas purifying process and gas purifying apparatus | Masato Kawai, Nobuhiro Okamura | 2000-04-11 |
| 5689974 | Method and apparatus for pre-purification for air cryogenic separation plant | Atsushi Fujita | 1997-11-25 |