Issued Patents All Time
Showing 26–50 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971961 | Cephalosporin compounds and antibacterial agents | Kaysuyoshi Iwamatsu, Kenji Sakagami, Kunio Atsumi, Takashi Yoshida, Seiji Shibahara +1 more | 1990-11-20 |
| 4954510 | Antiviral agent containing lactam compound | Takashi Tsuroka, Satoru Nakabayashi, Yuji Matsuhashi, Haruo Yamamoto, Shigeharu Inouye | 1990-09-04 |
| 4954641 | Novel antitumor antibiotic substance and a method for production thereof | Yoshikazu Sato, Hiroomi Watabe, Shigetaka Ishii, Tadashi Nakazawa, Takashi Shomura +1 more | 1990-09-04 |
| 4950660 | Beta-lactam compound and process for production thereof | Kunio Atsumi, Yuichi Yamamoto, Kenji Sakagami, Ken Nishihata | 1990-08-21 |
| 4929633 | Actinonin derivatives having physiological activities | Seiji Shibahara, Yukiko Takahashi, Yuji Matsuhashi, Mitsugu Hachisu, Tomio Takeuchi +1 more | 1990-05-29 |
| 4898858 | Cephalosporin derivatives and antibiotics containing the same | Seiji Shibahara, Tsuneo Okonogi, Yasushi Murai, Toshiaki Kudo, Takashi Yoshida +1 more | 1990-02-06 |
| 4889926 | "Method for the synthesis of (2""R)-4'-O-tetra-hydropyranyladriamycim using 14-chloro-daunomycin as an intermediate" | Tomoya Machinami, Takeshi Nakamura, Ken Nishihata, Tomio Takeuchi | 1989-12-26 |
| 4839350 | Cephalosporin compounds and the production thereof | Kunio Atsumi, Kenji Sakagami, Yuichi Yamamoto, Takashi Yoshida, Ken Nishihata +1 more | 1989-06-13 |
| 4810702 | Antibacterial agent for mammal use comprising cephalosporin derivatives as an effective ingredient | Seiji Shibahara, Tsuneo Okonogi, Yasushi Murai, Toshiaki Kudo, Takashi Yoshida +1 more | 1989-03-07 |
| 4795743 | 2'-deamino-2'-hydroxyistamycin B.sub.o derivatives of low toxicity | Yoshiro Okami, Daishiro Ikeda, Hamao Umezawa | 1989-01-03 |
| 4785090 | Cephalosporin derivatives | Takashi Tsuruoka, Seiji Shibahara, Katsuyoshi Iwamatsu, Tsuneo Okonogi, Satoru Nakabayashi +6 more | 1988-11-15 |
| 4758557 | Cephalosporin derivatives and bactericides containing the same | Takashi Tsuruoka, Katsuyoshi Iwamatsu, Kiyoaki Katano, Hiroko Ogino, Ryoichi Okamoto +4 more | 1988-07-19 |
| 4716221 | 4'-demethyl-4-epipodophyllotoxin derivative | Hamao Umezawa, Tomio Takeuchi, Wataru Tanaka, Tomohisa Takita, Yoshio Nishimura +1 more | 1987-12-29 |
| 4658058 | 11-O-methylspergualin | Hamao Umezawa, Tomio Takeuchi, Hironobu Iinuma, Daishiro Ikeda, Teruya Nakamura +1 more | 1987-04-14 |
| 4567165 | N-Methanesulfonic acid derivatives of 3-demethoxyistamycin B | Hamao Umezawa | 1986-01-28 |
| 4547567 | Derivatives of 4'-demethyl-4-epipodophyllotoxin | Hamao Umezawa, Tomio Takeuchi, Wataru Tanaka, Tomohisa Takita, Yoshio Nishimura +1 more | 1985-10-15 |
| 4525299 | (-)-15-Deoxyspergualin, process for the preparation thereof, and intermediate of the same | Hamao Umezawa, Tomio Takeuchi | 1985-06-25 |
| 4518532 | N-[4-(3-aminopropyl)-aminobutyl]-2-(.omega.-gua nidino-fatty-acid-amido)-2-substituted-ethanamide and salt thereof | Hamao Umezawa, Tomio Takeuchi, Hironobu Iinuma, Daishiro Ikeda, Teruya Nakamura +1 more | 1985-05-21 |
| 4518802 | N-[4-[(3-aminopropyl)amino]butyl]-2,2-dihydroxyethanamide | Hamao Umezawa, Tomio Takeuchi, Hironobu Iinuma, Daishiro Ikeda, Teruya Nakamura +1 more | 1985-05-21 |
| 4499083 | 3-O-Demethyl derivatives of the istamycin B series of compounds | Hamao Umezawa, Yoshiro Okami | 1985-02-12 |
| 4486419 | "5,2',3',4',4"",6""-Hexadeoxykanamycin and its 1-N-acylated derivative" | Hamao Umezawa | 1984-12-04 |
| 4479943 | "3-Demethoxyistamycin B, the 2""-N-formimidoyl derivative thereof and pharmaceutical composition containing same" | Hamao Umezawa, Daishiro Ikeda | 1984-10-30 |
| 4474946 | Di-N.sup.6', O.sup.3 -Demethylistamycin A preparation | Hamao Umezawa, Daishiro Ikeda | 1984-10-02 |
| 4472388 | N-Methanesulfonic acid derivatives of 3-O-demethylistamycin B and production thereof | Hamao Umezawa | 1984-09-18 |
| 4430346 | Novel carcinostatic substance and process for synthesis thereof | Hamao Umezawa, Tomio Takeuchi, Hironobu Iinuma, Daishiro Ikeda, Teruya Nakamura +1 more | 1984-02-07 |