Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5739023 | Stabilized neutral metalloprotease composition, a method of making the composition, and a method of transporting the composition | Tsuneo Harada, Yukio Kunisawa, Johanna Christina Maria Smeets, Shuya Takasuga, Wilhelmus J. J. Van Den Tweel | 1998-04-14 |
| 5693485 | Enzymatic coupling reaction of N-protected-L-aspartic acid and phenylalanine methyl ester | Tsuneo Harada, Shigeaki Irino, Yukio Kunisawa | 1997-12-02 |
| 5527689 | Enzymatic coupling of L-phenylalanine methyl ester and N-benzyloxycarbonyl-aspartic acid | Shigeaki Irino, Shin Nakamura, Peter Jan Leonard Mario Quaedflieg, Theodorus Johannes Godfried Maria Van Dooren | 1996-06-18 |
| 5347035 | Method for crystallizing .alpha.-L-aspartyl-L-phenylalanine methyl ester | Hidetoshi Wakamatsu, Tsuneo Harada, Yukio Kunisawa | 1994-09-13 |
| 5124082 | Method for preparation of .alpha., .beta.-unsaturated carboxylic acid containing fluorine | Mitsuru Takahashi, Hideo Shuyama | 1992-06-23 |
| 5001289 | Shaped zeolite catalyst for liquid phase organic reactions | Masao Nakano, Kazuhiko Sekizawa, Toshio Hironaka, Seiichi Asano | 1991-03-19 |
| 4944852 | Method for purifying a dipeptide ester | Yasuhiro Kurauchi, Michihiro Akazawa, Tsuneo Harada, Akira Tokuda | 1990-07-31 |
| 4940802 | 4,4'-bis(phthalimido)diphenyl sulfone compounds, processes for their production and flame retardant polymer compositions containing them | Takao Matsuba, Masashige Kubo, Takumi Kagawa, Koji Kawabata | 1990-07-10 |
| 4935562 | Method for producing 4,4'-dibromobiphenyl | Fumio Okisaki, Masashige Kubo, Satoshi Fujii | 1990-06-19 |
| 4835301 | Process for producing stable .alpha.-L-aspartyl-L-phenylalanine methyl ester | Hidetoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Akira Tokuda | 1989-05-30 |
| 4835303 | Process for producing dry .alpha.-L-aspartyl-L-phenylalanine methyl ester | Hideotoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Akira Tokuda | 1989-05-30 |
| 4830720 | Method for purifying a dipeptide ester | Tsuneo Harada, Ken Fukuda, Hiroshi Shimizu, Akira Tokuda | 1989-05-16 |
| 4810818 | Process for producing alpha-aspartyl-l-phenylalanine methyl ester having an improved solubility | Hidetoshi Wakamatsu, Shigeaki Irino, Tsuneo Harada, Akira Tokuda | 1989-03-07 |
| 4769486 | Method for racemizing an optically active amino acid | Tsuneo Harada | 1988-09-06 |
| 4704471 | Process for producing DL-phenylalanine | Tuneo Harada | 1987-11-03 |
| 4594450 | Process for producing an .alpha.-halogeno-.beta.-phenylpropionic acid | Tuneo Harada | 1986-06-10 |
| 4564471 | Method for reductive elimination of protecting groups | Katsumi Sugiyama, Hideo Takeda, Hiroko Sato, Yuji Nonaka, Masashige Kubo | 1986-01-14 |
| 4536342 | Process for producing a halogen-containing ethylbenzene derivative | Tuneo Harada | 1985-08-20 |
| 4534909 | Process for producing a halogen-containing ethylbenzene derivative | Tuneo Harada | 1985-08-13 |
| 4521514 | Process for producing an addition compound of a dipeptide ester and an amino acid ester | Shigeaki Irino, Tsuneo Harada, Masao Nakamura | 1985-06-04 |
| 4487717 | Process for recovering a dipeptide derivative | Shigeaki Irino, Norio Hagi | 1984-12-11 |
| 4436925 | Addition compound of dipeptide derivative and amino acid derivative | Yoshikazu Isowa, Muneki Ohmori, Kaoru Mori, Tetsuya Ichikawa, Yuji Nonaka +3 more | 1984-03-13 |
| 4284721 | Method for manufacturing dipeptides | Shigeaki Nishimura, Yuji Nonaka, Tsutomu Hashimoto, Keiichi Kihara | 1981-08-18 |
| 4256836 | Addition compound of dipeptide derivative and amino acid derivative | Yoshikazu Isowa, Muneki Ohmori, Kaoru Mori, Tetsuya Ichikawa, Yuji Nonaka +3 more | 1981-03-17 |
| 4212945 | Process for recovering protease | Yuji Nonaka, Heijiro Satoh | 1980-07-15 |