Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591886 | Process for the crystallizing L-.alpha.-aspartyl-L-phenylalanine methyl ester from the solution | Hiroshi Ichiki, Hiroyuki Itoh, Yoshitsugu Kono | 1997-01-07 |
| 5206430 | Method for obtaining high-purity cinnamic acid | Hiroyuki Itoh, Yoshitsugu Kono, Usaji Takaki | 1993-04-27 |
| 5057615 | Process for purifying tryptophan | Yoshitsugu Kono, Hiroyuki Itoh, Tsugio Watanabe | 1991-10-15 |