Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814406 | Scale inhibitor | Sakae Katayama, Masatsune Okuma, Keisyo Nakanishi | 1989-03-21 |
| 4512552 | Corrosion inhibitor | Sakae Katayama, Kazuo Marugame, Sadaoki Kanada, Yoshinari Kawasaki | 1985-04-23 |