TK

Takao Kumasaka

HI Hitachi: 19 patents #1,906 of 28,497Top 7%
HC Hitachi Koki Co.: 18 patents #45 of 888Top 6%
RS Ricoh Printing Systems: 1 patents #97 of 200Top 50%
Overall (All Time): #211,523 of 4,157,543Top 6%
21
Patents All Time

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDate
7003241 Image recording device and an image recording system Shinya Kobayashi, Kunio Satoh, Susumu Edo, Seiji Maruo, Atsushi Onose 2006-02-21
5893664 Multi-color image forming apparatus having arrangements for reducing ozone generation Nobuyoshi Hoshi 1999-04-13
5860049 Developing apparatus and picture image forming apparatus Tatsuo Igawa, Shigetaka Fujiwara, Nobuyoshi Hoshi 1999-01-12
5832350 Developing apparatus and color electrophotographic apparatus using the same Kunio Fukuchi, Masayasu Anzai, Tatsuo Igawa 1998-11-03
5745818 Image formation method and image formation apparatus Hisao Okada, Noboru Tokuyasu, Yuzuru Simazaki, Susumu Tateyama 1998-04-28
5574546 Developing apparatus for an electrophotographic machine Yasuo Takuma, Tatsuo Igawa, Tomio Sugaya, Yasuo Kikuchi 1996-11-12
5430528 Magnetic brush with bristle height equal to developing gap Yuzuru Simazaki, Shigetaka Fujiwara, Isamu Komatsu, Youji Hirose 1995-07-04
5365325 Method of multi-color recording using electro-photography process and apparatus therefor wherein mixed colors generation is prevented Yuzuru Shimazaki, Toru Miyasaka, Yukio Otome 1994-11-15
5315353 Image recording method including determining a gap between a photosensitive medium and a developing roller and apparatus therefor Yuzuru Simazaki, Kunio Satoh, Youji Hirose 1994-05-24
5307147 Electrophotographic recording apparatus having a plurality of developing devices which can be changed over Yuzuru Simazaki, Kunio Satoh, Tomio Sugaya, Youji Hirose 1994-04-26
5291253 Corona deterioration and moisture compensation for transfer unit in an electrophotographic apparatus Yuzuru Simazaki, Yasuo Takuma, Masato Yamada, Nobuyoshi Hoshi 1994-03-01
5081502 Radiant heat fixing apparatus Teruaki Mitsuya 1992-01-14
5008691 Multi-color electrophotograph apparatus Yuzuru Simazaki 1991-04-16
4998143 Electrophotographic image transfer member, electrophotographic image transfer device and electrophotographic recording apparatus Yuzuru Simazaki, Akira Terakado, Yasuro Hori 1991-03-05
4992923 Electrical power supply, fusing apparatus and recording apparatus using the same Teruaki Mitsuya, Yasuro Hori, Shinichi Nishino, Shigetaka Fumiwara 1991-02-12
4959693 Duplex reproducing apparatus with device for cooling and conveying fused toner image Teruaki Mitsuya, Takao Umeda, Yasuro Hori, Ikuo Shimokobe, Nobuyoshi Hoshi 1990-09-25
4952951 Electrophotographic recording apparatus Yuzuru Simazaki, Kiyohiko Tanno 1990-08-28
4947200 Developing device and multi-color recording apparatus Yuzuru Simazaki, Isamu Komatsu 1990-08-07
4862828 Electrophotographic recording method and apparatus with non-contact development Teruaki Mitsuya, Isamu Komatsu, Shigetaka Fujiwara, Yuzuru Shimazaki 1989-09-05
4821052 Flash fusing apparatus for reducing occurrence of spots on recording paper Teruaki Mitsuya, Shinichi Nishino, Masato Yamada, Shigetaka Fujiwara 1989-04-11
4782362 Recording apparatus having a flash fusing apparatus Teruaki Mitsuya, Masaru Higaki, Shigetaka Fujiware 1988-11-01