Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169563 | Water treatment agent and water treatment method for a boiler | Sakae Katayama, Kazuo Marugame, Hiroshi Asai | 1992-12-08 |
| 4512552 | Corrosion inhibitor | Sakae Katayama, Tadahiko Asano, Kazuo Marugame, Yoshinari Kawasaki | 1985-04-23 |