TU

Takao Umeda

HI Hitachi: 25 patents #1,255 of 28,497Top 5%
HC Hitachi Koki Co.: 21 patents #28 of 888Top 4%
Ricoh Company: 2 patents #5,693 of 9,818Top 60%
RS Ricoh Printing Systems: 2 patents #64 of 200Top 35%
Overall (All Time): #76,934 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDate
7873312 Transfer apparatus, method of manufacturing the transfer apparatus and image forming apparatus using the transfer apparatus Hiroyuki Mabuchi, Shunichi Oohara 2011-01-18
7745307 Method of manufacturing an inkjet head through the anodic bonding of silicon members Osamu Machida, Jun Nagata 2010-06-29
7651197 Method of manufacturing an inkjet head through the anodic bonding of silicon members Osamu Machida, Jun Nagata 2010-01-26
7643779 Developer transporting amount controlling member, developing apparatus, imaging apparatus, and method for exchanging developing unit Hiroyuki Mabuchi 2010-01-05
6345163 Developing device for image forming apparatus Katsuhiko Suzuki, Hisao Okada 2002-02-05
6330403 Image forming apparatus with adjusting device Akio Tsujita, Takashi Rokutanda 2001-12-11
6144836 Electrostatographic printing machine Akio Tsujita, Takashi Rokutanda, Yukio Otome 2000-11-07
6101347 Paper carrying device in electrostatic recording apparatus Takashi Rokutanda, Yukio Otome, Nobuyuki Mori 2000-08-08
6070032 Electrostatic printing apparatus having an erase lamp Takashi Rokutanda, Yukio Otome 2000-05-30
6032015 Apparatus for printing on both sides of an image printing medium by one process Ryoji Kojima, Masayasu Anzai, Michio Yokosuka, Katsuhiko Suzuki, Tadahiro Kaneko 2000-02-29
5848323 Apparatus for printing images on both sides of an image printing medium by one process Ryoji Kojima, Masayasu Anzai, Michio Yokosuka, Katsuhiko Suzuki, Tadahiro Kaneko 1998-12-08
5832333 Electrostatic recording apparatus and electrostatic recording method Seiji Maruo, Hiroyuki Mabuchi 1998-11-03
5659841 Electrostatic recording control method and electrostatic recording apparatus Hiroyuki Mabuchi, Masayasu Anzai, Shinji Asai, Kozi Kato, Yoshihiro Gunji 1997-08-19
5630201 Development apparatus having a plurality of rolls rotated at particular speeds Katsuhiko Suzuki, Masayasu Anzai 1997-05-13
5623331 High-speed electrophotographic fixing unit Tadahiro Kaneko, Tsutomu Maekawa, Teruaki Mitsuya 1997-04-22
5600405 Bias cleaning system and electrostatic printing apparatus therewith and operating method thereof Katsuya Kawai, Yosuke Saito, Hiroyuki Mabuchi, Masayasu Anzai, Masato Miwa +3 more 1997-02-04
5579096 Imaging apparatus and method for cleaning transfer/conveyer means Yousuke Saito, Masayasu Anzai, Hiroyuki Mabuchi, Yasuo Kikuchi, Masato Miwa +1 more 1996-11-26
5559578 Electrostatic recording apparatus with electrified cap and managing system thereof Toru Miyasaka, Osamu Namikawa, Isamu Komatsu, Tetsuya Nagata, Yasuo Takuma +1 more 1996-09-24
5515144 Apparatus for displaying image information recorded on a document and any modified data added thereto Toru Miyasaka, Kozo Nakamura 1996-05-07
5504556 Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus Toru Miyasaka, Osamu Namikawa, Isamu Komatsu 1996-04-02
5452058 Information recording system capable of protecting secrecy 1995-09-19
5404201 Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus Toru Miyasaka, Osamu Namikawa, Isamu Komatsu 1995-04-04
5373351 Electrostatic recording apparatus and managing system thereof Tetsuya Nagata, Yasuo Takuma, Tatsuo Igawa 1994-12-13
5331387 Printing and binding apparatus Hisao Okada, Kunio Satoh 1994-07-19
5321477 Image forming apparatus capable of preventing the winding on the image carrier Tetuya Nagata, Takao Takuma, Tatsuo Igawa, Masato Miwa 1994-06-14