Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8773488 | Exposure head and producing method thereof, cartridge, and image forming apparatus | Yohei Nishino, Hirohito Yoneyama, Takashi Matsumura, Yoshinori Yamaguchi, Katsuhiro Sato | 2014-07-08 |
| 8687034 | Exposure apparatus and image forming apparatus | Hirohito Yoneyama, Yohei Nishino, Takashi Matsumura, Yoshinori Yamaguchi, Katsuhiro Sato | 2014-04-01 |
| 8441507 | Exposure device, image forming apparatus, and image forming unit | Yoshinori Yamaguchi, Hirohito Yoneyama, Yohei Nishino, Takashi Matsumura, Katsuhiro Sato | 2013-05-14 |
| 8435646 | Organic electroluminescent device and display device | Daisuke Okuda, Katsuhiro Sato, Takeshi Agata, Toru Ishii, Akira Imai +6 more | 2013-05-07 |
| 8421339 | Organic electroluminescent device, exposure device, process cartridge, image forming apparatus, display apparatus, and method for driving organic electroluminescent device | Yohei Nishino, Hirohito Yoneyama, Yoshinori Yamaguchi, Takashi Matsumura, Katsuhiro Sato | 2013-04-16 |
| 8264140 | Organic electroluminescence element and display device | Koji Horiba, Hidekazu Hirose, Tadayoshi Ozaki, Yohei Nishino, Mieko Seki +6 more | 2012-09-11 |
| 7910748 | Thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium | Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Hidekazu Hirose, Takeshi Agata +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, Mieko Seki, Hidekazu Hirose, Takeshi Agata +8 more | 2011-03-08 |
| 7749618 | Organic electroluminescent device, production method thereof, and image display medium | Koji Horiba, Hidekazu Hirose, Mieko Seki, Akira Imai, Tadayoshi Ozaki +6 more | 2010-07-06 |
| 7705114 | Method for producing polymer organic electronic material, polymer organic electronic material, and organic electroluminescent device | Tadayoshi Ozaki, Mieko Seki, Yohei Nishino, Koji Horiba, Hirohito Yoneyama +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, Mieko Seki, Hidekazu Hirose, Takeshi Agata +8 more | 2010-02-09 |
| 7589166 | Thiophene-containing compound and polymer thereof | Yoshihiro Ohba, Kazuaki Sato, Yohei Nishino, Mieko Seki, Takeshi Agata +5 more | 2009-09-15 |
| 7455916 | Organic electroluminescent element | Hidekazu Hirose, Daisuke Okuda, Mieko Seki, Tadayoshi Ozaki, Hirohito Yoneyama +3 more | 2008-11-25 |
| 7183009 | Organic electroluminescent element | Hidekazu Hirose, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Tadayoshi Ozaki +3 more | 2007-02-27 |
| 7166859 | Organic semiconductor transistor element, semiconductor device using the same, and process for producing the semiconductor device | Hidekazu Hirose, Mieko Seki, Daisuke Okuda, Tadayoshi Ozaki, Takeshi Agata +4 more | 2007-01-23 |
| 7153980 | Thiophene-containing compound and thiophene-containing compound polymer | Yoshihiro Ohba, Kazuaki Sato, Mieko Seki, Takeshi Agata, Katsuhiro Sato +2 more | 2006-12-26 |
| 7060783 | Diamine compound polymer having condensed aromatic group | Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki +4 more | 2006-06-13 |
| 6936679 | Charge-transporting polymer | Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose, Tadayoshi Ozaki +3 more | 2005-08-30 |
| 6872476 | Organic electro-luminescent device | Tadayoshi Ozaki, Mieko Seki, Hirohito Yoneyama, Daisuke Okuda, Hidekazu Hirose +3 more | 2005-03-29 |
| 6741387 | Display element | Kiyoshi Shigehiro, Kenji Yao, Hiroshi Miyamoto, Kyoko Nishikawa, Yasufumi Suwabe +5 more | 2004-05-25 |
| 6670052 | Organic light emitting diode | Hidekazu Hirose, Daisuke Okuda, Hirohito Yoneyama, Mieko Seki, Takeshi Agata +1 more | 2003-12-30 |
| 6652995 | Organic electroluminescence device | Mieko Seki, Daisuke Okuda, Hirohito Yoneyama, Hidekazu Hirose, Takeshi Agata +1 more | 2003-11-25 |
| 6205307 | Image-forming apparatus | Katsumi Nukada, Wataru Yamada | 2001-03-20 |
| 6010810 | Electrophotographic photoreceptor, process for the preparation thereof and image forming apparatus comprising the same | Tomozumi Uesaka, Kazuhiro Koseki, Fumio Ojima, Masahiro Iwasaki | 2000-01-04 |
| 5948579 | Electrophotographic photosensitive material | Toru Ishii, Katsumi Nukada, Masahiro Iwasaki, Taketoshi Higashi, Fumio Ojima | 1999-09-07 |