Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721159 | Method and device for conveying chemicals through borehole | Katsutoshi Ohkochi, Mamoru Shinozaki, Toshiyuki Ohshita, Masayasu Kitano | 1988-01-26 |
| 4706753 | Method and device for conveying chemicals through borehole | Katsutoshi Ohkochi, Mamoru Shinozaki, Toshiyuki Ohshita, Masayasu Kitano | 1987-11-17 |