Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11618703 | Crude oil sludge treatment agent, crude oil sludge treatment method and crude oil sludge treatment agent kit | Minoru Matsushima, Michiyo Sugiura | 2023-04-04 |
| 11186508 | Water treating agent and kit and methods for producing and using | Michiyo Sugiura | 2021-11-30 |