Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5994553 | Method for preparing 2-mercaptothiazole | Katsumasa Harada, Akio Matsushita, Taku Nakamura, Takafumi Hirakawa, Ken Ikuno +1 more | 1999-11-30 |
| 5808092 | Process for preparing-1-ethyl-5-hydroxypyrazole | Takafumi Hirakawa, Ken Ikuno | 1998-09-15 |
| 5679830 | Method of producing pivaloylacetic acid ester | Masayoshi Oku, Tsuyoshi Ueyama | 1997-10-21 |
| 5315032 | Method of producing an N-hydroxycarbamate compound | Keigo Nishihira, Shuji Tanaka, Masahiro Kondo | 1994-05-24 |
| 5162563 | Process for preparing a diester of carboxylic acid | Keigo Nishihira, Shuji Tanaka | 1992-11-10 |
| 4467109 | Process for continuous preparation of diester of oxalic acid | Susumu Tahara, Kozo Fujii, Keigo Nishihira, Masaoki Matsuda | 1984-08-21 |
| 4461909 | Process for continuously preparing a diester of oxalic acid | Susumu Tahara, Kozo Fujii, Keigo Nishihira, Masaoki Matsuda | 1984-07-24 |
| 4453026 | Process for continuously preparing ethylene glycol | Susumu Tahara, Kozo Fujii, Keig Nishihira, Masaoki Matsuda | 1984-06-05 |