Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5866669 | Sulfonated phenol-formaldehyde resin for paper-making | Hisao Takatsu, Mitsuyoshi Kato, Masafumi Yoshikawa | 1999-02-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5866669 | Sulfonated phenol-formaldehyde resin for paper-making | Hisao Takatsu, Mitsuyoshi Kato, Masafumi Yoshikawa | 1999-02-02 |