Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10859935 | Toner | Takeshi Ohtsu, Tadashi Fukuda, Mikihiro Akasaki, Akinori Miyamoto, Kota Mori +5 more | 2020-12-08 |
| 8512923 | Electrophotographic photosensitive member and electrophotographic apparatus | Jun Ohira | 2013-08-20 |
| 7932005 | Negatively-chargeable electrophotographic photosensitive member, image forming process and electrophotographic apparatus | Jun Ohira, Makoto Aoki | 2011-04-26 |
| 7550180 | Plasma treatment method | Toshiyasu Shirasuna, Tatsuyuki Aoike, Kazuyoshi Akiyama, Hitoshi Murayama, Takashi Otsuka +2 more | 2009-06-23 |
| 7255969 | Electrophotographic photosensitive member | Satoshi Kojima, Makoto Aoki, Jun Ohira, Hironori Owaki, Motoya Yamada | 2007-08-14 |
| 7229730 | Process for producing negative-charging electrophotographic photosensitive member, negative-charging electrophotographic photosensitive member, and electrophotographic apparatus using same | Jun Ohira, Satoshi Kojima, Makoto Aoki | 2007-06-12 |
| 7229731 | Electrophotographic photosensitive member and electrophotographic apparatus using the electrophotographic photosensitive member | Makoto Aoki, Satoshi Kojima, Hironori Owaki, Jun Ohira | 2007-06-12 |
| 7211357 | Electrophotographic photosensitive member | Toshiyuki Ehara, Hideaki Matsuoka, Satoshi Kojima | 2007-05-01 |
| 7157197 | Electrophotographic photosensitive member | Makoto Aoki, Satoshi Kojima, Motoya Yamada, Jun Ohira, Hironori Owaki | 2007-01-02 |
| 7033721 | Method for producing electrophotographic photosensitive member, electrophotographic photosensitive member and electrophotographic apparatus using the same | Junichiro Hashizume, Toshiyuki Ehara, Hideaki Matsuoka, Ryuji Okamura, Koji Hitsuishi +2 more | 2006-04-25 |
| 7033717 | Process for producing electrophotographic photosensitive member, and electrophotographic photosensitive member and electrophotographic apparatus making use of the same | Satoshi Kojima, Toshiyuki Ehara, Hideaki Matsuoka, Junichiro Hashizume, Ryuji Okamura +2 more | 2006-04-25 |
| 6991879 | Electrophotographic photosensitive member | Hideaki Matsuoka, Satoshi Kojima | 2006-01-31 |
| 6946167 | Deposited film forming apparatus and deposited film forming method | Toshiyasu Shirasuna, Kazuhiko Takada, Ryuji Okamura, Kazuyoshi Akiyama, Hitoshi Murayama | 2005-09-20 |
| 6846600 | Electrophotographic photosensitive member, process for its production, and electrophotographic apparatus | Toshiyuki Ehara, Junichiro Hashizume, Masaya Kawada, Tetsuya Karaki, Hironori Ohwaki +2 more | 2005-01-25 |
| 6761128 | Plasma treatment apparatus | Toshiyasu Shirasuna, Tatsuyuki Aoike, Kazuyoshi Akiyama, Hitoshi Murayama, Takashi Otsuka +2 more | 2004-07-13 |
| 6753123 | Process and apparatus for manufacturing electrophotographic photosensitive member | Ryuji Okamura, Junichiro Hashizume | 2004-06-22 |
| 6702898 | Deposited film forming apparatus | Toshiyasu Shirasuna, Kazuhiko Takada, Ryuji Okamura, Kazuyoshi Akiyama, Hitoshi Murayama | 2004-03-09 |
| 6645688 | Image-forming apparatus and image-forming method | Junichiro Hashizume, Ryuji Okamura | 2003-11-11 |
| 6635397 | Negative-charging electrophotographic photosensitive member | Ryuji Okamura, Junichiro Hashizume | 2003-10-21 |
| 6576387 | Image-forming apparatus and image-forming method | Junichiro Hashizume, Ryuji Okamura | 2003-06-10 |
| 6486045 | Apparatus and method for forming deposited film | Takashi Otsuka, Tatsuyuki Aoike, Toshiyasu Shirasuna, Kazuyoshi Akiyama, Hitoshi Murayama +1 more | 2002-11-26 |
| 6443191 | Vacuum processing methods | Hitoshi Murayama, Tatsuyuki Aoike, Toshiyasu Shirasuna, Kazuyoshi Akiyama, Takashi Ohtsuka +2 more | 2002-09-03 |
| 6350497 | Plasma processing method | Hitoshi Murayama, Toshiyasu Shirasuna, Ryuji Okamura, Kazuyoshi Akiyama, Takashi Ohtsuka | 2002-02-26 |
| 6347601 | Film forming apparatus | Toshiyasu Shirasuna, Kazuhiko Takada, Ryuji Okamura, Kazuyoshi Akiyama, Hitoshi Murayama | 2002-02-19 |
| 6321759 | Method for cleaning a substrate | Ryuji Okamura, Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama | 2001-11-27 |