YI

Yoshie Iwakura

Sharp Kabushiki Kaisha: 39 patents #267 of 10,731Top 3%
Ricoh Company: 7 patents #2,977 of 9,818Top 35%
Overall (All Time): #63,392 of 4,157,543Top 2%
46
Patents All Time

Issued Patents All Time

Showing 26–46 of 46 patents

Patent #TitleCo-InventorsDate
7158750 Paper transport apparatus and paper transport method Minoru Tomiyori, Susumu Murakami, Hideshi Izumi 2007-01-02
7130570 Transfer device Susumu Murakami, Takahiro Fukunaga, Kuniaki Nakano, Hideshi Izumi, Minoru Tomiyori 2006-10-31
7062209 Transfer device with coaxial rotating cams Susumu Murakami, Takahiro Fukunaga, Masanori Yamada, Kuniaki Nakano 2006-06-13
7058336 Access-controlling mechanism and image forming apparatus Susumu Murakami, Minoru Tomiyori, Hideshi Izumi, Takashi Hori, Takateru Yamamoto 2006-06-06
6954605 Transfer device having casing with elastic member Susumu Murakami, Minoru Tomiyori, Hideshi Izumi 2005-10-11
6259869 Image forming apparatus Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2001-07-10
6233422 Image forming apparatus having transfer drum with transfer paper charging member Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2001-05-15
6169862 Image forming apparatus with nip time changing device Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2001-01-02
6134415 Roller/belt type multiple color image transfer apparatus including decreasing contact region widths between successive image support/transfer roller pairs and common power Supply for transfer means and charger means Fumio Shimazu 2000-10-17
6118954 Image forming apparatus having transfer roller with charge-removing and cleaning devices Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2000-09-12
6097923 Image forming method and apparatus Seiichi Yoshida, Hideki Ohnishi, Fumio Shimazu 2000-08-01
6081686 Image forming apparatus having transfer drum with specific construction Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2000-06-27
6078772 Image-forming apparatus Toshihiko Takaya, Fumio Shimazu, Seiichi Yoshida, Hideki Ohnishi, Tomohiro Oikawa 2000-06-20
6026256 Image forming apparatus Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 2000-02-15
5909611 Image forming apparatus 1999-06-01
5799225 Image forming apparatus having variable transfer and attraction voltage Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu, Hiromu Yoshimoto, Kouichi Yamauchi +3 more 1998-08-25
5771430 Image forming apparatus with toner transfer 1998-06-23
5758244 Transfer device for an image forming apparatus 1998-05-26
5745820 Image forming apparatus with a potential generating device Fumio Shimazu 1998-04-28
5697034 Image forming apparatus which stably holds a uniform surface potential of a transfer device Takuya Abe, Kiyoshi Toizumi, Fumio Shimazu 1997-12-09
5477308 Image forming apparatus having an image-quality correction function Kazuyuki Ohnishi, Yasutaka Maeda, Yoichi Shimazawa, Mihoko Okada, Yuichi Kazaki +1 more 1995-12-19