Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6120653 | Separation and purification method of t-butyl-methylphenol isomer | Kiyoshi Ikimi, Susumu Tsukada | 2000-09-19 |
| 5589077 | Liquid filtering and supply system controlling recirculation responsive to pressure difference across filter | Yoji Matsuda, Masao Morikawa | 1996-12-31 |
| 5334774 | Process for purifying phenol | Kayoko Kogure, Kazuo Kimura, Michihiro Kawasaki, Eiji IMAMURA | 1994-08-02 |
| 5304684 | Process for producing phenol and methyl ethyl ketone | Hiroshi Nishida, Kazuo Kimura, Shouji Hamada, Hirooki Nagaoka | 1994-04-19 |