RO

Ryuji Okamura

Canon: 49 patents #754 of 19,416Top 4%
TO Toyota: 26 patents #728 of 26,838Top 3%
MC Murata Manufacturing Co.: 2 patents #2,631 of 5,295Top 50%
📍 Susono, JP: #12 of 1,238 inventorsTop 1%
Overall (All Time): #24,232 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 26–50 of 77 patents

Patent #TitleCo-InventorsDate
8620560 Internal combustion engine control device Yasuhito Imai 2013-12-31
7060406 Light-receiving member, image-forming apparatus, and image-forming method Kunimasa Kawamura, Shigenori Ueda, Toshiyuki Ehara, Junichiro Hashizume, Masaya Kawada +2 more 2006-06-13
7033721 Method for producing electrophotographic photosensitive member, electrophotographic photosensitive member and electrophotographic apparatus using the same Junichiro Hashizume, Toshiyuki Ehara, Hideaki Matsuoka, Koji Hitsuishi, Satoshi Kojima +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, Koji Hitsuishi +2 more 2006-04-25
6946167 Deposited film forming apparatus and deposited film forming method Kazuto Hosoi, Toshiyasu Shirasuna, Kazuhiko Takada, 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
6753123 Process and apparatus for manufacturing electrophotographic photosensitive member Junichiro Hashizume, Kazuto Hosoi 2004-06-22
6702898 Deposited film forming apparatus Kazuto Hosoi, Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2004-03-09
6649020 Plasma processing apparatus Tatsuyuki Aoike, Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2003-11-18
6645688 Image-forming apparatus and image-forming method Junichiro Hashizume, Kazuto Hosoi 2003-11-11
6635397 Negative-charging electrophotographic photosensitive member Junichiro Hashizume, Kazuto Hosoi 2003-10-21
6586149 Light-receiving member, image-forming apparatus, and image-forming method Kunimasa Kawamura, Shigenori Ueda, Toshiyuki Ehara, Junichiro Hashizume, Masaya Kawada +2 more 2003-07-01
6576387 Image-forming apparatus and image-forming method Junichiro Hashizume, Kazuto Hosoi 2003-06-10
6528130 Exhaust process and film depositing method using the exhaust process Junichiro Hashizume, Shigenori Ueda 2003-03-04
6500500 Method for forming a deposited film by plasma chemical vapor deposition 2002-12-31
6413592 Apparatus for forming a deposited film by plasma chemical vapor deposition Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2002-07-02
6406824 Electrophotographic photosensitive member and electrophotographic apparatus having the photosensitive member Shigenori Ueda, Junichiro Hashizume 2002-06-18
6350497 Plasma processing method Hitoshi Murayama, Toshiyasu Shirasuna, Kazuyoshi Akiyama, Takashi Ohtsuka, Kazuto Hosoi 2002-02-26
6347601 Film forming apparatus Kazuto Hosoi, Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2002-02-19
6336423 Apparatus for forming a deposited film by plasma chemical vapor deposition Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2002-01-08
6321759 Method for cleaning a substrate Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama, Kazuto Hosoi 2001-11-27
6300225 Plasma processing method Tatsuyuki Aoike, Toshiyasu Shirasuna, Kazuhiko Takada, Kazuyoshi Akiyama, Hitoshi Murayama 2001-10-09
6285566 RCC power supply with remote disabling of oscillation frequency control Koji Nakahira, Ryota Tani, Akio Nishida 2001-09-04
6282400 Image-forming apparatus and image forming method using a controlled dynamic frictional force between a cleaning blade and a photosensitive member Makoto Aoki, Shigenori Ueda, Junichiro Hashizume 2001-08-28
6218064 Electrophotographic apparatus and electrophotographic light receiving member Shigenori Ueda, Junichiro Hashizume 2001-04-17