Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122175 | Method of and apparatus for producing superpure nitrogen | Takazumi Ishizu, Junichi Hosokawa, Masahiro Yamazaki, Shinjiroo Ueda, Kanji Fujimori | 1992-06-16 |
| 4746343 | Method and apparatus for gas separation | Takazumi Ishizu, Masahiro Yamazaki, Kazunori Nagae, Junichi Hosokawa | 1988-05-24 |
| 4696689 | Method and apparatus for separating of product gas from raw gas | Hideharu Mori, Masahiro Yamazaki | 1987-09-29 |
| 4299607 | Process for recovering nitrogen in low pressure type air separation apparatus | Michimasa Okabe | 1981-11-10 |