Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877907 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Teruyuki Nagata, Koju Okazaki, Masayuki Furuya, Emiko Nishida | 1989-10-31 |
| 4873374 | Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor | Teruyuki Nagata, Koju Okazaki, Masayuki Furuya, Emiko Nishida | 1989-10-10 |
| 4851590 | Method of purifying 2,4-xylenol | Katsuju Watanabe, Hitoshi Nakayama, Masayuki Furuya, Teruyuki Nagata | 1989-07-25 |
| 4814488 | 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same | Teruyuki Nagata | 1989-03-21 |