SM

Seiji Maruo

HI Hitachi: 15 patents #2,636 of 28,497Top 10%
HC Hitachi Koki Co.: 8 patents #145 of 888Top 20%
DE Denso: 1 patents #6,940 of 11,792Top 60%
HC Hitachi Cable: 1 patents #530 of 1,086Top 50%
RS Ricoh Printing Systems: 1 patents #97 of 200Top 50%
Overall (All Time): #240,993 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8340522 Filter assembly and optical module using same Juhyun Yu, Ryuta Takahashi, Noribumi Kobayashi, Hiroki Katayama, Yuuki Naganuma 2012-12-25
7864028 In-vehicle emergency call apparatus Hiroshi Sakai 2011-01-04
7003241 Image recording device and an image recording system Shinya Kobayashi, Kunio Satoh, Susumu Edo, Takao Kumasaka, Atsushi Onose 2006-02-21
6836632 Small-size color electro-photographic apparatus Toru Miyasaka, Masashi Yamamoto, Nobuyoshi Hoshi 2004-12-28
6574451 Small-size color electro-photographic apparatus Toru Miyasaka, Masashi Yamamoto, Nobuyoshi Hoshi 2003-06-03
6271874 Electrophotographic printer having an image memory, a horizontal scanning fringe correction exposure determining section, a vertical scanning fringe correction exposure determining section, and a switch Shinichi Akatsu, Hiroyuki Mabuchi, Teruaki Mitsuya, Shinya Kobayashi 2001-08-07
6131000 Electrophotographic printing apparatus using electric potential dividing development Shinichi Akatsu, Teruaki Mitsuya, Kenichi Ito, Nobuyoshi Hoshi, Ryuuichi Shimizu +3 more 2000-10-10
6085051 Small-size color electro-photographic apparatus Toru Miyasaka, Masashi Yamamoto, Nobuyoshi Hoshi 2000-07-04
6055256 Laser beam printer and semiconductor laser device suitable for a light source thereof Shin'ichi Nakatsuka, Shinya Kobayashi, Akira Arimoto, Susumu Saito 2000-04-25
5959655 Light beam scanning apparatus which controls power and spot shape of light beam Shinichi Nakatsuka, Akira Arimoto, Kunio Sato, Shinya Kobayashi, Susumu Saito 1999-09-28
5884119 Light exposure controlling method of electrophotographic apparatus for suppressing fringe in picture Hisao Okada, Hiroyuki Mabuchi, Kazutoshi Obara, Kenichi Ito 1999-03-16
5832333 Electrostatic recording apparatus and electrostatic recording method Takao Umeda, Hiroyuki Mabuchi 1998-11-03
5815775 Color electro-photographic apparatus Toru Miyasaka, Masashi Yamamoto, Nobuyoshi Hoshi 1998-09-29
5809053 Semiconductor laser device and optical printing apparatus using the same Shin'ichi Nakatsuka, Shinya Kobayashi, Akira Arimoto, Susumu Saito 1998-09-15
5737008 Electrophotographic image recording apparatus with photoreceptor exposure control Shinya Kobayashi, Kunio Sato, Susumu Saito 1998-04-07
5668590 Optical beam scanning system with rotating beam compensation Akira Arimoto, Yoshihito Maeda, Tatsuya Sugita 1997-09-16
5666598 Image forming method and apparatus using energy beam impingement on image forming particles to move the same Tatsuya Sugita, Akira Arimoto, Teruaki Mitsuya, Nobuyoshi Hoshi, Mamoru Okano +4 more 1997-09-09
5666599 Color electro-photographic printing apparatus Toru Miyasaka, Masashi Yamamoto, Nobuyoshi Hoshi 1997-09-09
5255112 Optical scanning apparatus and system Yasuro Hori, Yasuaki Suzuki 1993-10-19