Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835301 | Process for producing stable .alpha.-L-aspartyl-L-phenylalanine methyl ester | Hidetoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Kiyotaka Oyama | 1989-05-30 |
| 4835303 | Process for producing dry .alpha.-L-aspartyl-L-phenylalanine methyl ester | Hideotoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Kiyotaka Oyama | 1989-05-30 |
| 4830720 | Method for purifying a dipeptide ester | Tsuneo Harada, Ken Fukuda, Hiroshi Shimizu, Kiyotaka Oyama | 1989-05-16 |
| 4831180 | Process for producing alpha-L-aspartyl-L-phenylalanine methyl ester having an improved solubility | Hidetoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Hiyotaka Oyama | 1989-05-16 |
| 4810818 | Process for producing alpha-aspartyl-l-phenylalanine methyl ester having an improved solubility | Hidetoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Kiyotaka Oyama | 1989-03-07 |