Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678411 | Liquefied gas supply system | Masao Matsumura, Tadahiko Kishikawa | 1997-10-21 |
| 5649425 | Turboexpander pump unit | Masao Matsumura, Seigo Katsuta | 1997-07-22 |
| 5618404 | Electrolytic process for producing lead sulfonate and tin sulfonate for solder plating use | Yoshiaki Okuhama, Seishi Masaki, Yoshiharu Matsuda, Masakazu Yoshimoto | 1997-04-08 |