Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672756 | Triphenylamine compound for use in electrophotographic photoconductors | Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga, Masafumi Ohta, Akihiro Imai | 1997-09-30 |
| 5654481 | Amine compound | Atsushi Takesue, Takanobu Watanabe, Chieko Inayoshi | 1997-08-05 |
| 5631404 | Diamine compounds for use in electrophotographic photoconductors | Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada, Tamotsu Aruga +1 more | 1997-05-20 |
| 5629421 | Hydrazone compounds | Atsushi Takesue, Yasuo Murakami, Takanobu Watanabe | 1997-05-13 |
| 5604065 | Electrophotographic photoconductor and triphenylamine compound for use therein | Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga, Masafumi Ohta, Akihiro Imai | 1997-02-18 |
| 5512400 | Hydrazone compound and electrophotographic photoreceptor and organic electroluminescent element both containing the same | Atsushi Takesue, Yasuo Murakami, Takanobu Watanabe | 1996-04-30 |
| 5489495 | Electrophotographic photoconductor and diamine compounds for use in the same | Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada, Tamotsu Aruga +1 more | 1996-02-06 |
| 5413892 | Electrostatic image developing toner | Yuji Matsuura, Osamu Mukudai, Kayoko Watanabe | 1995-05-09 |
| 5413891 | Electrostatic image developing toner | Yuji Matsuura, Osamu Mukudai, Kayoko Watanabe | 1995-05-09 |
| 5391454 | Electrostatic image developing toner | Osamu Mukudai, Yuji Matsuura, Kayoko Watanabe | 1995-02-21 |
| 5378573 | Electrophotographic toner | Yuji Matsuura, Osamu Mukudai, Miki Kanno, Kayoko Watanabe | 1995-01-03 |
| 5368971 | Electrophotographic toner containing a zinc benzoate compound | Noboru Akuzawa, Yuuji Matsuura, Genpei Sugiyama | 1994-11-29 |
| 5346794 | Electrophotographic toner | Yuji Matsuura, Osamu Mukudai, Miki Kanno, Kayoko Watanabe | 1994-09-13 |
| 5312707 | Electrophotographic photoconductor and diamine compounds for use in the same | Masafumi Ota, Masaomi Sasaki, Tamotsu Aruga, Tomoyuki Shimada, Masaki Okubo | 1994-05-17 |
| 5232809 | Toner for electrophotography | Noboru Akuzawa, Yuuji Matsuura, Kayoko Watanabe | 1993-08-03 |
| 5164283 | Electrophotographic developing powder | Isao Niimura, Hiroyoshi Yamaga, Noboru Akuzawa | 1992-11-17 |
| 4612558 | Fluoran compounds | Masahiko Yamaguchi, Kazuyuki Wakasugi, Susumu Suzuka, Michihiro Gonda, Toshiyuki Abe +2 more | 1986-09-16 |
| 4594601 | Fluoran compounds | Masahiko Yamaguchi, Michihiro Gonda, Mikiko Kanasugi, Toshio Obara | 1986-06-10 |