Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355190 | Process for recovery of resorcinol from aqueous resorcinol solution containing hydroquinone | Fujihisa Matsunaga, Hiroaki Nakagawa | 1982-10-19 |
| 4334108 | Process and apparatus for preparation of phenols | Katsuhiko Hashimoto, Kazuhiro Watari, Kenichi Mizuno, Tadateru Murakami, Yutaka Matsuoka +2 more | 1982-06-08 |
| 4323505 | Polyalkylhydroxychromene and process for preparing the same | Isao Hashimoto | 1982-04-06 |
| 4322567 | Process for production of aromatic alcohols | Fujihisa Matsunaga, Norio Ohno | 1982-03-30 |
| 4283567 | Method for recovering resorcinol | Hiroaki Nakagawa, Masayasu Isibasi | 1981-08-11 |
| 4273623 | Process for recovery of resorcin | Isao Hashimoto, Toru Taguchi | 1981-06-16 |
| 4271322 | Process for preparation of phenols | Fujihisa Matsunaga | 1981-06-02 |
| 4266081 | Process for preparation of peroxides | Kenichi Mizuno, Hiroshi Iwasaki | 1981-05-05 |
| 4239644 | Liquid peroxide composition | Kenichi Mizuno, Tetuhiro Matumoto | 1980-12-16 |
| 4239921 | Process for purification of crude resorcinol | Isao Hashimoto, Hiroaki Nakagawa, Toru Taguchi | 1980-12-16 |
| 4237319 | Process for liquid-phase oxidation of m-diisopropylbenzene | Isao Hashimoto, Ichiro Imai | 1980-12-02 |
| 4192958 | Method for recovering resorcinol | Isao Hashimoto, Hiroaki Nakagawa | 1980-03-11 |