Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11377415 | Method for converting N,N-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalyst | Kazushi Mashima, Haruki Nagae, Takahiro Hirai, Daiki KATO, Shusei Soma +3 more | 2022-07-05 |
| 11185851 | Polymer-supported metal | Takashi Ohshima | 2021-11-30 |
| 9611279 | Zinc complex | Takashi Ohshima, Ryo YAZAKI, Yuki Yokote | 2017-04-04 |
| 8552204 | Zinc cluster | Hideki Nara, Takahiro Fujiwara | 2013-10-08 |
| 7442797 | Platinum complex and light emitting device | Hisanori Itoh, Yuji Nakayama, Takeshi Iwata, Yoji Hori | 2008-10-28 |
| 6228547 | Bis(3,4-methylenedioxyphenylamino) derivatives and electrophotographic photoreceptor containing the derivatives | Tohru Kobayashi, Yoko Aoki, Mamoru Yamada, Hiroshi Sugiyama, Toshimitsu Hagiwara | 2001-05-08 |
| 6172264 | Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 2001-01-09 |
| 6150065 | Electrophotographic photoreceptor | Tohru Kobayashi, Yoko Aoki, Mamoru Yamada, Hiroshi Sugiyama, Toshimitsu Hagiwara +1 more | 2000-11-21 |
| 6093345 | Optically active compound, liquid crystal composition containing the same, and liquid crystal electro-optic element using the same | Shigeru Mitsuhashi, Takashi Imai, Kiichi Mori, Mamoru Yamada, Hiroshi Sugiyama +3 more | 2000-07-25 |
| 6083651 | Phenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 2000-07-04 |
| 5989765 | Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 1999-11-23 |
| 5942615 | Phenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 1999-08-24 |
| 5910610 | Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 1999-06-08 |
| 5882813 | Electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Yoko Takahashi, Toshimitsu Hagiwara | 1999-03-16 |
| 5750785 | 1,4-bis(2', 2'-diphenylvinyl)benzene derivative and charge transporting material and electrophotographic photoreceptor using the same | Hiroshi Sugiyama, Toshimitsu Hagiwara | 1998-05-12 |
| 5736284 | Carbazole derivative charge transporting material using the same and electrophotographic photoreceptor | Tohru Kobayashi, Hiroshi Sugiyama, Toshimitsu Hagiwara | 1998-04-07 |
| 5573878 | Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor | Toshimitsu Hagiwara, Hiroshi Sugiyama, Tohru Kobayashi | 1996-11-12 |
| 5567560 | Triphenylamine derivative charge-transporting material containing electrophotographic photoreceptor | Toshimitsu Hagiwara, Hiroshi Sugiyama, Tohru Kobayashi | 1996-10-22 |
| 5521042 | 1,4-bis(2',2'-diphenylvinyl)benzene derivative and charge transporting material and electrophotographic photoreceptor using the same | Hiroshi Sugiyama, Toshimitsu Hagiwara | 1996-05-28 |
| 5486441 | Electrophotographic photoreceptor containing 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative | Toshimitsu Hagiwara | 1996-01-23 |
| 5475517 | Ferroelectric liquid crystal device with angles between smectic layers and the direction normal to the substrates are 5-15 degrees | Toshimitsu Konuma, Takeshi Nishi, Akira Sugawara, Hitoshi Kondo, Toshimitsu Hagiwara | 1995-12-12 |
| 5463128 | 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative and electrophotographic photoreceptor using the same | Toshimitsu Hagiwara | 1995-10-31 |
| 5229238 | Electrophotographic photoreceptor comprising a benzodithiafulvene derivative charge transport material | Tohru Kobayashi, Toshimitsu Hagiwara | 1993-07-20 |