Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12269948 | Polyimide precursor solution and method for producing porous polyimide film | Hidekazu Hirose | 2025-04-08 |
| 12103993 | Pressure-responsive particles, cartridge, and apparatus for manufacturing printed matter | Yoshifumi Iida, Takako Kobayashi, Takashi Hasegawa, Kiyohiro YAMANAKA, Takeshi Iwanaga +2 more | 2024-10-01 |
| 10031394 | Electrophoretic particle, electrophoretic particle dispersion liquid, display medium, and display device | Daisuke Nakayama, Yasuo Yamamoto, Naoki Hiji, Ryota Mizutani, Chikara Manabe +2 more | 2018-07-24 |
| 9874829 | Dispersant for liquid development, liquid developer, liquid developer cartridge, image forming apparatus, and image forming method | Yasuo Yamamoto | 2018-01-23 |
| 9152005 | Particle dispersion for display, display medium, and display device | Takashi Morikawa, Naoki Hiji, Yasuo Yamamoto, Daisuke Nakayama, Hiroaki Moriyama +5 more | 2015-10-06 |
| 8435646 | Organic electroluminescent device and display device | Daisuke Okuda, Katsuhiro Sato, Kiyokazu Mashimo, Takeshi Agata, Toru Ishii +6 more | 2013-05-07 |
| 8264140 | Organic electroluminescence element and display device | Koji Horiba, Hidekazu Hirose, Tadayoshi Ozaki, Yohei Nishino, Takeshi Agata +6 more | 2012-09-11 |
| 8120719 | Photo-addressable display medium and photo-addressable display device | Hiroe Okuyama, Yasuhiro Yamaguchi, Tomozumi Uesaka, Hideo Kobayashi | 2012-02-21 |
| 7948567 | Optically writable display medium and optical writing method | Hideo Kobayashi, Yasuhiro Yamaguchi, Tomozumi Uesaka, Hiroe Okuyama, Masaaki Araki | 2011-05-24 |
| 7910748 | Thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium | Yoshihiro Ohba, Kazuaki Sato, Hidekazu Hirose, Takeshi Agata, Koji Horiba +8 more | 2011-03-22 |
| 7902382 | Thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium | Yoshihiro Ohba, Kazuaki Sato, Hidekazu Hirose, Takeshi Agata, Koji Horiba +8 more | 2011-03-08 |
| 7749618 | Organic electroluminescent device, production method thereof, and image display medium | Koji Horiba, Hidekazu Hirose, Akira Imai, Tadayoshi Ozaki, Takeshi Agata +6 more | 2010-07-06 |
| 7705114 | Method for producing polymer organic electronic material, polymer organic electronic material, and organic electroluminescent device | Tadayoshi Ozaki, Yohei Nishino, Koji Horiba, Hirohito Yoneyama, Daisuke Okuda +6 more | 2010-04-27 |
| 7659410 | Thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium | Yoshihiro Ohba, Kazuaki Sato, Hidekazu Hirose, Takeshi Agata, Koji Horiba +8 more | 2010-02-09 |
| 7589166 | Thiophene-containing compound and polymer thereof | Yoshihiro Ohba, Kazuaki Sato, Yohei Nishino, Takeshi Agata, Kiyokazu Mashimo +5 more | 2009-09-15 |
| 7455916 | Organic electroluminescent element | Hidekazu Hirose, Daisuke Okuda, Tadayoshi Ozaki, Hirohito Yoneyama, Toru Ishii +3 more | 2008-11-25 |
| 7205080 | Arylamine compound, charge transport material, electrophotographic photoreceptor, image forming apparatus and process cartridge | Masahiro Iwasaki, Katsumi Nukada | 2007-04-17 |
| 7183009 | Organic electroluminescent element | Hidekazu Hirose, Hirohito Yoneyama, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata +3 more | 2007-02-27 |
| 7166859 | Organic semiconductor transistor element, semiconductor device using the same, and process for producing the semiconductor device | Hidekazu Hirose, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata, Toru Ishii +4 more | 2007-01-23 |
| 7153980 | Thiophene-containing compound and thiophene-containing compound polymer | Yoshihiro Ohba, Kazuaki Sato, Takeshi Agata, Katsuhiro Sato, Kiyokazu Mashimo +2 more | 2006-12-26 |
| 7060783 | Diamine compound polymer having condensed aromatic group | Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata +4 more | 2006-06-13 |
| 6986978 | Apparatus for forming image, process cartridge and process for regenerating the same | Katsumi Nukada, Wataru Yamada, Rie Ishii | 2006-01-17 |
| 6936679 | Charge-transporting polymer | Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki, Takeshi Agata +3 more | 2005-08-30 |
| 6872476 | Organic electro-luminescent device | Tadayoshi Ozaki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Takeshi Agata +3 more | 2005-03-29 |
| 6670052 | Organic light emitting diode | Hidekazu Hirose, Daisuke Okuda, Hirohito Yoneyama, Kiyokazu Mashimo, Takeshi Agata +1 more | 2003-12-30 |