Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363656 | Ultra-high purity nitrogen and oxygen generator | Takao Yamamoto | 1994-11-15 |
| 5349822 | Method and apparatus for the production of ultra-high purity nitrogen | Takao Yamamoto | 1994-09-27 |
| 5345773 | Method and apparatus for the production of ultra-high purity nitrogen | Takao Yamamoto | 1994-09-13 |