Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5874609 | Process for crystallizing L-.alpha.-aspartyl-L-phenylanlanine methyl ester | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1999-02-23 |
| 5859282 | Method of dissolving crystals of L-.alpha.-aspartyl-L-phenyl alanine methyl ester | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1999-01-12 |
| 5744632 | Process for crystallizing L-.alpha.-aspartyl-L-phenylalanine methyl ester | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1998-04-28 |
| 5621137 | Method of dissolving crystals of L-.alpha.-aspartyl-L-phenylalanine methyl ester | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1997-04-15 |
| 5424476 | Method for preparing amino acid esters | Tadashi Takemoto | 1995-06-13 |
| 5391810 | Method of crystallizing .alpha.-L-aspartyl-L-phenylalanine methyl ester | So Abe, Shinichi Kishimoto, Toshihisa Kato | 1995-02-21 |
| 5292923 | Method of preparing .alpha.-l-aspartyl-l-phenylalanine methyl ester hydrochloride | Toshihisa Kato, Shinichi Kishimoto, Mikiya Kano, Tadashi Takemoto | 1994-03-08 |
| 5097060 | Process for crystallizing L-alpha-aspartyl-L-phenyl-alanine methyl ester | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1992-03-17 |
| 5041607 | Process for crystallizing L-alpha-aspartyl-L-phenyl-alanine methyl | Masayoshi Naruse, Haruo Kawasaki, Shinichi Kishimoto, Harutoshi Oura, Masao Nakamura | 1991-08-20 |
| 4985567 | Chiral phosphinopyrrolidine compounds and their use for asymmetric synthesis of optically active compounds | Kazuo Achiwa | 1991-01-15 |
| 4670568 | Process of producing n-formylaspartic anhydride | Masao Nakamura, Toshihide Yukawa, Haruo Kawasaki | 1987-06-02 |
| 4564471 | Method for reductive elimination of protecting groups | Katsumi Sugiyama, Hiroko Sato, Yuji Nonaka, Kiyotaka Oyama, Masashige Kubo | 1986-01-14 |
| 4536842 | System for measuring interfloor traffic for group control of elevator cars | Kiyoshi Yoneda, Hiroshi Takeuchi, Tetsuo Yamatani, Toyoto Hijiya, Koji Shibuya +1 more | 1985-08-20 |
| 4508912 | Process for producing N-carbobenzoxy-L-aspartic anhydride | Tetsuo Yamatani, Toyoto Hijiya, Koji Shibuya, Kiichiro Tanaka | 1985-04-02 |
| 4345091 | Method of producing N-benzyloxycarbonyl-L-aspartic acid | Katsumi Sugiyama, Hiroko Sato | 1982-08-17 |