Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834766 | Method for preventing scale adhesion | Yoshiteru Sando, Eiichi Nakano | 1989-05-30 |
| 4829189 | Apparatus for low-temperature plasma treatment of sheet material | Tokuju Goto, Itsuo Tanaka, Masakatu Takahashi, Yoshikazu Sando | 1989-05-09 |