YA

Yuji Arai

Ricoh Company: 118 patents #21 of 9,818Top 1%
NS Nippon Steel: 30 patents #16 of 4,423Top 1%
TC Taiyo Yuden Co.: 18 patents #59 of 959Top 7%
NM Nippon Steel & Sumitomo Metal: 16 patents #15 of 1,491Top 2%
SI Sumitomo Metal Industries: 13 patents #12 of 1,462Top 1%
SO Sony: 5 patents #7,785 of 25,231Top 35%
NE Nec: 2 patents #5,510 of 14,502Top 40%
SC Sanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%
NA Nanao: 1 patents #12 of 27Top 45%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
UC Usui Co.: 1 patents #15 of 34Top 45%
Overall (All Time): #3,263 of 4,157,543Top 1%
202
Patents All Time

Issued Patents All Time

Showing 126–150 of 202 patents

Patent #TitleCo-InventorsDate
8000627 Charging device, process cartridge, image forming apparatus, and toner Haruji Mizuishi, Tokuya Ojimi, Toshio Koike, Takeshi Shintani, Takuzi Yoneda +7 more 2011-08-16
7953362 Image forming apparatus, process cartridge, and lubricant applicator Hiroyuki Nagashima, Nobuo Kuwabara, Hirotaka Hatta, Hiroshi Hosokawa 2011-05-31
7953363 Lubricant applicator and image forming apparatus including same Kenji Honjoh, Toshiya Satoh, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono +5 more 2011-05-31
7931757 Seamless steel pipe for line pipe and a process for its manufacture Kunio Kondo, Nobuyuki Hisamune 2011-04-26
7896985 Seamless steel pipe for line pipe and a process for its manufacture Kunio Kondo, Nobuyuki Hisamune 2011-03-01
7896984 Method for manufacturing seamless steel pipe for line pipe Kenji Kobayashi, Tomohiko Omura, Kunio Kondo, Nobuyuki Hisamune 2011-03-01
7844198 Electrophotographic photoreceptor, photoreceptor supporting device, imaging device and process cartridge Nobuo Kuwabara, Hiroyuki Nagashima, Shuji Tanaka, Hiroshi Ono, Ken Amemiya +3 more 2010-11-30
7835673 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2010-11-16
7826786 Image forming apparatus, lubricant applying device, transfer device, process cartridge, and toner Takeo Suda, Shinichi Kawahara, Takatsugu Fujishiro, Tokuya Ojimi, Takeshi Tabuchi +15 more 2010-11-02
7815755 Seamless steel pipe and manufacturing method thereof Kunio Kondo, Nobuyuki Hisamune 2010-10-19
7727463 Steel pipe for an airbag system Kunio Kondo 2010-06-01
7697870 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2010-04-13
7680429 Charging device including charging roller and cleaning roller Muraishi Takaya, Hiromichi Ninomiya, Atsushi Sampe, Yoshiyuki Kimura, Hiroyuki Nagashima +9 more 2010-03-16
7672635 Method and apparatus for image forming and effectively applying lubricant to an image bearing member Yoshiki Hozumi, Toshio Koike, Ken Amemiya, Masanori Kawasumi, Tokuya Ojimi +5 more 2010-03-02
7566416 Steel pipe for an airbag inflator and a process for its manufacture Takashi Takano, Kunio Kondo, Keisuke Hitoshio 2009-07-28
7539451 Image forming apparatus and toner Masanori Kawasumi, Haruji Mizuishi, Tokuya Ojimi, Toshio Koike, Takeshi Shintani +8 more 2009-05-26
7530439 Drive device, sheet conveying device, and image forming apparatus including drive force transmitting unit including reverse preventing mechanism for preventing shaft from being reversed Mitsuru Yamada, Yutaka Fukuchi 2009-05-12
7519317 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2009-04-14
7498070 Optical information recording medium Sachiko Ishibashi, Fumi Hara, Toru Fujii 2009-03-03
7486916 Method and apparatus of image forming and process cartridge included in the apparatus Kiyonori Tsuda, Atsushi Sampe, Takeo Suda, Satoshi Hatori, Tomoji Ishikawa +1 more 2009-02-03
7480476 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2009-01-20
7477862 Charged device, cleaning device, process cartridge, toner, and image-forming device that uses these Muraishi Takaya, Hiromichi Ninomiya, Atsushi Sampe, Yoshiyuki Kimura, Hiroyuki Nagashima +9 more 2009-01-13
7477856 Method and apparatus for image forming capable of effectively preventing resonance of frequencies Takuzi Yoneda, Hiroshi Ono, Masanori Kawasumi, Toshio Koike, Ken Amemiya +5 more 2009-01-13
7458426 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe Kunio Kondo, Hisashi Amaya, Akihito Yamane 2008-12-02
7430377 Image forming apparatus and process cartridge having a detachable unit body having a lubricant applying unit and image carrier mounted thereon Toshio Koike, Ken Amemiya, Naohiro Kumagai, Masato Yanagida, Masanori Kawasumi +8 more 2008-09-30