Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6008403 | Method for producing optically active amino acid of derivative thereof having high optical purity | Kimio Katsuura, Shigeaki Irino | 1999-12-28 |
| 4944852 | Method for purifying a dipeptide ester | Yasuhiro Kurauchi, Michihiro Akazawa, Tsuneo Harada, Kiyotaka Oyama | 1990-07-31 |
| 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 |
| 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 |
| 4830720 | Method for purifying a dipeptide ester | Tsuneo Harada, Ken Fukuda, Hiroshi Shimizu, Kiyotaka 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 |
| 4463724 | Method for controlling the air-fuel ratio in a carburetor of an internal combustion engine | Kastuyoshi Fukaya, Hitoshi Hirano | 1984-08-07 |
| 4385339 | Fuel injector for an internal combustion engine | Shigetaka Takada, Yoshiro Iwama | 1983-05-24 |