AK

Akihiro Kotsugai

Ricoh Company: 51 patents #217 of 9,818Top 3%
Overall (All Time): #52,970 of 4,157,543Top 2%
51
Patents All Time

Issued Patents All Time

Showing 26–50 of 51 patents

Patent #TitleCo-InventorsDate
7374851 Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method Shinya Nakayama, Satoshi Mochizuki, Yasuaki Iwamoto, Yasuo Asahina, Masayuki Ishii +17 more 2008-05-20
7368212 Toner for developing electrostatic image, developer, image forming apparatus, process for forming image, process cartridge and process for measuring porosity of toner Hideki Sugiura, Satoshi Mochizuki, Yasuaki Iwamoto, Yasuo Asahina, Shinya Nakayama +4 more 2008-05-06
7368213 Toner and fixing device and image forming device using the same Shinya Nakayama, Fumihiro Sasaki, Satoshi Mochizuki, Yasuo Asahina, Osamu Uchinokura +5 more 2008-05-06
7320852 Carrier for developer for developing electrostatic latent image, developer using same and image forming method using same Kimitoshi Yamaguchi, Naoki Imahashi, Hiroaki Takahashi 2008-01-22
7318989 Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method Satoshi Mochizuki, Hisashi Nakajima, Yasuo Asahina, Osamu Uchinokura, Masayuki Ishii +8 more 2008-01-15
7258959 Toner for electrophotography and image forming apparatus Shinya Nakayama, Satoshi Mochizuki, Yasuaki Iwamoto, Yasuo Asahina, Kazuhiko Umemura +7 more 2007-08-21
7192679 Carrier for electrophotographic developer Kimitoshi Yamaguchi, Naoki Imahashi, Hiroaki Takahashi 2007-03-20
7049037 Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner Kohki Katoh, Masanori Suzuki, Yohichiro Watanabe, Masahide Yamashita, Toyoshi Sawada +1 more 2006-05-23
6939654 Carrier and developer for developing latent electrostatic images Kimitoshi Yamaguchi, Motoharu Tanaka, Naoki Imahashi, Hiroaki Takahashi 2005-09-06
6852459 Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner Kohki Katoh, Masanori Suzuki, Yohichiro Watanabe, Masahide Yamashita, Toyoshi Sawada +1 more 2005-02-08
6743558 Carrier for electrophotographic developer Kimitoshi Yamaguchi, Masahide Yamashita, Hiroaki Takahashi 2004-06-01
6739534 Carrier for developer for electrophotography Kimitoshi Yamaguchi 2004-05-25
6735409 Process for developing, image-forming apparatus, and image-forming process cartridge Hiroaki Takahashi, Kimitoshi Yamaguchi, Naoki Imahashi 2004-05-11
6716561 Toner for developing electrostatic latent image and image forming method using same Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Masahide Yamashita, Toyoshi Sawada +1 more 2004-04-06
6696213 Method of developing a latent electrostatic image Kimitoshi Yamaguchi 2004-02-24
6653037 Toner for developing latent electrostatic images, and image forming method and device Toyoshi Sawada, Masanori Suzuki, Kohki Katoh, Yohichiroh Watanabe, Masahide Yamashita +1 more 2003-11-25
6599672 Carrier for developer for electrophotography Kimitoshi Yamaguchi 2003-07-29
6489073 Method and device for developing electrostatic latent images Kimitoshi Yamaguchi, Hiroshi Ikuno 2002-12-03
6472118 Carrier for developer for electrophotography Kimitoshi Yamaguchi 2002-10-29
6168894 Image forming method and dry toner therefor Mitsuo Aoki, Hachiro Tosaka, Hiroyuki Fushimi, Masanori Suzuki 2001-01-02
6010814 Electrophotographic toner composition and image formation method using the composition Masanori Suzuki 2000-01-04
6004715 Toner for developing electrostatic images Masanori Suzuki, Hachiroh Tosaka, Mituo Aoki, Hiroyuki Fushimi 1999-12-21
5912100 Toner for developing electrostatic images Mituo Aoki, Masanori Suzuki 1999-06-15
5429901 Toner for use in electrostatic development Kenkichi Muto, Yohichiro Watanabe 1995-07-04
5418103 Toner for developing latent electrostatic images Kenkichi Muto, Hiroyuki Fushimi, Yoichiro Watanabe, Ian Harpur 1995-05-23