Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6872474 | Light emitting polymer composition, and organic electroluminescence device and production process thereof | Hiroyuki Yasuda, Yasunori Negoro | 2005-03-29 |
| 6451458 | Electroluminescent material and electroluminescent cell | Yasumasa Takeuchi, Ding Ding | 2002-09-17 |
| 6007928 | Electroluminescence light-emitting cell | Yasumasa Takeuchi, Ding Ding | 1999-12-28 |
| 5232987 | Rubber compositions | Fumio Tsutsumi, Makoto Kondo, Yoshiro Yagi | 1993-08-03 |
| 5164450 | Butadiene copolymer rubber composition | Fumio Tsutsumi, Yoshihisa Fujinaga, Noboru Oshima, Tatsuo Fujimaki | 1992-11-17 |
| 5064910 | Preparation of conjugated diene polymers modified with an organo-tin or germanium halide | Iwakazu Hattori, Fumio Tsutsumi, Masao Yoshizawa | 1991-11-12 |
| 5017636 | Rubber compositions from modified trans-polybutadiene and rubber for tires | Iwakazu Hattori, Noboru Shimada, Noboru Oshima, Hiroshi Mouri, Tatsuo Fujimaki +1 more | 1991-05-21 |
| 5011888 | Vulcanized rubber composition | Fumio Tsutsumi, Akihiko Morikawa, Noboru Oshima, Tatsuro Hamada, Tatsuo Fujimaki +1 more | 1991-04-30 |
| 4933401 | Catalyst composition for polymerization of conjugated diene and process for producing conjugated diene polymer | Iwakazu Hattori, Noboru Shimada, Noboru Oshima | 1990-06-12 |
| 4906706 | Modified conjugated diene polymer and process for production thereof | Iwakazu Hattori, Fumio Tsutsumi, Masao Yoshizawa | 1990-03-06 |
| 4894409 | Rubber composition | Noboru Shimada, Iwakazu Hattori, Noboru Oshima, Tatsuro Hamada, Hiromi Fukuoka +1 more | 1990-01-16 |
| 4835216 | Conjugated diene series rubber compositions | Akihiko Morikawa, Fumio Tsutsumi, Noboru Oshima, Tatsuro Hamada, Hiromi Fukuoka +2 more | 1989-05-30 |
| 4824908 | Butadiene-based rubber composition | Fumio Tsutsumi, Noboru Shimada, Yoshihisa Fujinaga, Noboru Oshima, Tatsuro Hamada +1 more | 1989-04-25 |
| 4810746 | Rubber composition for use in vibration insulating material | Fumio Tsutsumi, Makoto Kondo, Masaru Oda, Masaki Ogawa, Akira Tsuchikura +1 more | 1989-03-07 |
| 4782119 | Rubber composition comprising a styrene-butadiene block copolymer having two kinds of blocks | Fumio Tsutsumi, Akio Iakashima, Noboru Oshima, Tatsuo Fujimaki, Yoshiyuki Morimoto | 1988-11-01 |
| 4742117 | Conjugated diene based rubber composition | Fumio Tsutsumi, Noboru Shimada, Yoshihisa Fujinaga, Noboru Oshima, Tatsuro Hamada +1 more | 1988-05-03 |
| 4742124 | Rubber composition for use in tire | Fumio Tsutsumi, Yoshihisa Fujinaga, Noboru Oshima, Tatsuo Fujimaki | 1988-05-03 |
| 4721753 | Diene polymer composition containing copolymer derived from 2,3-dimethyl butadiene | Kaoru Nakako, Tatsuo Fujimaki | 1988-01-26 |
| 4588782 | Diene polymers and process for producing the same | Hisao Ono, Fumio Tsutsumi, Eitaro Okuya | 1986-05-13 |
| 4533711 | Polybutadiene rubber compositions having improved green strength | Yasumasa Takeuchi, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata, Shigeru Tomihira | 1985-08-06 |
| 4515922 | Rubber compositions | Masao Yoshizawa, Masaki Ogawa, Yasushi Hirata, Shigeru Tomihira | 1985-05-07 |
| 4468496 | Polybutadiene rubber compositions | Yasumasa Takeuchi, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata, Shigeru Tomihira | 1984-08-28 |
| 4463133 | Rubber compositions suitable for use in tire tread | Yasumasa Takeuchi, Fumio Tsutsumi, Akio Takashima, Tatsuo Fujimaki, Shinsuke Yamaguchi +1 more | 1984-07-31 |
| 4461883 | Process for producing conjugated diene polymer using a solubilized lanthanum carboxylate catalyst | Yasumasa Takeuchi, Tooru Shibata | 1984-07-24 |
| 4433109 | Styrene-butadiene block copolymer | Yasumasa Takeuchi, Fumio Tsutsumi, Akio Takashima, Iwakazu Hattori | 1984-02-21 |