Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11130092 | Method for concentrating ozone gas and apparatus for concentrating ozone gas | Koichi Izumi, Naohisa Makihira | 2021-09-28 |
| 11123679 | Method for concentrating ozone gas and apparatus for concentrating ozone gas | Koichi Izumi, Naohisa Makihira | 2021-09-21 |