Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849138 | Method of producing alkali metal benzenesulfinates | Masao Kawamura, Kunioki Kato, Masato Yoshikawa, Hirokazu Kagano | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849138 | Method of producing alkali metal benzenesulfinates | Masao Kawamura, Kunioki Kato, Masato Yoshikawa, Hirokazu Kagano | 1989-07-18 |