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 101–125 of 202 patents

Patent #TitleCo-InventorsDate
8709174 Seamless steel pipe for line pipe and method for manufacturing the same Keisuke Hitoshio 2014-04-29
8696834 Method for manufacturing seamless pipes Keiichi Kondo, Toshiharu Abe, Kunio Kondo, Yuichi Yano 2014-04-15
8682218 Fixing device and image forming apparatus incorporating same Yoshiki Yamaguchi, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Hiromasa Takagi +9 more 2014-03-25
8676103 Fixing device and image forming apparatus incorporating same Masaaki Yoshikawa, Hiromasa Takagi, Yoshiki Yamaguchi, Arinobu Yoshiura, Toshihiko Shimokawa +9 more 2014-03-18
8676104 Fixing device and image forming apparatus Masaaki Yoshikawa, Tetsuo Tokuda, Yutaka Ikebuchi, Takuya Seshita, Hiroshi Yoshinaga +9 more 2014-03-18
8676107 Lubricant applying device, process cartridge, and image forming apparatus Michiya Okamoto, Ken Amemiya, Shinya Karasawa, Takuma Iwasaki, Satoshi Hatori +2 more 2014-03-18
8655211 Fixing device and image forming apparatus incorporating same Ippei Fujimoto, Hiromasa Takagi, Yoshiki Yamaguchi, Naoki Iwaya, Arinobu Yoshiura +9 more 2014-02-18
8655254 Lubricant applicator, image forming apparatus, and method of mounting lubricant applicator Ken Amemiya, Toshio Koike, Michiya Okamoto, Takuma Iwasaki, Hiroyuki Nagashima +6 more 2014-02-18
8611805 Waste-toner collecting device process cartridge and image forming apparatus having the same Toshio Koike, Ken Amemiya, Satoshi Hatori, Yuta Azeyanagi, Michiya Okamoto +1 more 2013-12-17
8588672 Lubricant applicator, process cartridge, transfer unit, and image forming apparatus Ken Amemiya, Satoshi Hatori, Toshio Koike, Michiya Okamoto, Takuma Iwasaki +1 more 2013-11-19
8577257 Process unit and image forming apparatus including same Satoshi Hatori, Toshio Koike, Yuta Azeyanagi, Kenji Honjoh 2013-11-05
8565661 Cleaning device including cleaning mechanism having noise reduction mechanism and image forming apparatus incorporating same Michiya Okamoto, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono, Ken Amemiya +4 more 2013-10-22
8496763 Seamless steel tube for an airbag accumulator and process for its manufacture Takashi Takano 2013-07-30
8494428 Lubricant applicator, process unit including the lubricant applicator, transfer unit including the lubricant applicator, and image forming apparatus including the process unit or the transfer unit Yuta Azeyanagi, Ken Amemiya, Satoshi Hatori, Toshio Koike, Michiya Okamoto +5 more 2013-07-23
8428488 Charging device, process cartridge, image forming apparatus, and toner Haruji Mizuishi, Tokuya Ojimi, Toshio Koike, Takeshi Shintani, Takuzi Yoneda +7 more 2013-04-23
8396408 Cleaning device, process cartridge, and image forming apparatus Ken Amemiya, Satoshi Hatori, Toshio Koike, Takuma Iwasaki, Shinya Karasawa +1 more 2013-03-12
8369770 Collection container, cleaning unit, and image forming apparatus capable of collecting waste toner efficiently Michiya Okamoto, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono, Ken Amemiya +4 more 2013-02-05
8361256 Method for producing seamless steel pipe Keiichi Nakamura 2013-01-29
8317946 Seamless steel pipe and method for manufacturing the same Takashi Takano 2012-11-27
8254823 Waste toner storage unit and image forming apparatus using same Hiroyuki Nagashima, Shuji Tanaka, Nobuo Kuwabara, Hiroshi Ono, Ken Amemiya +4 more 2012-08-28
8195070 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2012-06-05
8185032 Used toner collection device and image forming apparatus Hiroshi Ono, Tokuya Ojimi, Shuji Tanaka, Ken Amemiya, Toshio Koike +4 more 2012-05-22
8090293 Process cartridge and image forming apparatus employing same Hiroyuki Nagashima, Nobuo Kuwabara, Fumihito Itoh, Hiroshi Ono, Ken Amemiya +8 more 2012-01-03
8041280 Lubricant applying device, process cartridge, and image forming apparatus Toshio Koike, Hiroyuki Nagashima, Nobuo Kuwabara, Fumihito Itoh, Masahiko Shakuto +3 more 2011-10-18
8005406 Developer container, developer supplying device, and image forming apparatus Hiroshi Hosokawa, Kiyonori Tsuda, Satoshi Narumi, Ryuta Takeichi, Masanori Kawasumi +7 more 2011-08-23