Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4740578 | Process for producing polythiobisphenols and process for producing mercaptophenols by the hydrogenolysis of the same | Akira Onoe, Masao Kawamura, Kenzo Kobayashi, Masato Yoshikawa | 1988-04-26 |
| 4273941 | Process for producing p-hydroxybenzaldehyde | Masao Kawamura, Kunioki Kato, Hiroshi Mizokami, Tadashi Kanazawa | 1981-06-16 |
| 4195041 | Process for producing p-hydroxybenzaldehyde | Masao Kawamura, Kunioki Kato, Hiroshi Mizokami, Tadashi Kanazawa | 1980-03-25 |