YF

Yukio Fujiwara

Ricoh Company: 24 patents #864 of 9,818Top 9%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
TW The Japan Steel Works: 2 patents #158 of 643Top 25%
ND Nitto Denko: 1 patents #1,580 of 2,479Top 65%
OC Osaka Gas Co.: 1 patents #252 of 689Top 40%
YC Yachiyo Industry Co.: 1 patents #61 of 139Top 45%
MM Mitsubishi Materials: 1 patents #812 of 1,543Top 55%
NC Nippon Steel Welding Products And Engineering Co.: 1 patents #20 of 53Top 40%
Overall (All Time): #101,979 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 1–25 of 34 patents

Patent #TitleCo-InventorsDate
12064984 Printed matter producing method and printed matter producing apparatus, and printed matter Yuuma Usui, Mikiko Takada 2024-08-20
11827004 Method and device for producing foamed body Yuuma Usui 2023-11-28
11104158 Printing method and printing device Yuuma Usui 2021-08-31
10688704 Mold clamping device and method Masanosuke Ikegaya, Kazunari Suzuki, Toshimitsu Okuoka 2020-06-23
10124287 Gas concentration method Hiroshi Tanaka, Tamotsu Kotani 2018-11-13
9874916 Device registration apparatus and device registration method Hidenori Tomono, Hideaki Aratani 2018-01-23
9500683 Arbitration device, arbitration method, and computer program product Kenji Kameyama, Hidenori Tomono, Takeo Tsukamoto, Fumio Yoshizawa, Keisuke Konishi +5 more 2016-11-22
9207268 Type determination apparatus, type determination method, and computer-readable storage medium Takeo Tsukamoto, Hidenori Tomono, Kenji Kameyama, Takanori Inadome, Hideaki Aratani +2 more 2015-12-08
8899954 Crosshead Yuji Ito, Ryuichi Kawachi, Naoto Saito, Satoru Araya, Kazuhiro Ohtaki +4 more 2014-12-02
8795935 Electrophotographic photoconductor, production method of the same, image forming apparatus, and process cartridge Hidetoshi Kami, Junichi Yamazaki, Kazuhiro Egawa 2014-08-05
8669030 Electrophotographic photoreceptor, and image forming method and apparatus using the same Tetsuro Suzuki, Kazukiyo Nagai, Hiroshi Tamura, Hiroshi Ikuno, Hidetoshi Kami 2014-03-11
8597863 Electrophotographic photoreceptor, method of manufacturing electrophotographic photoreceptor, process cartridge, and image forming apparatus Hidetoshi Kami, Kazuhiro Egawa 2013-12-03
8568596 Membrane filtering device managing system and membrane filtering device for use therein, and membrane filtering device managing method Takahisa Konishi, Norio Ikeyama, Kouji Maruyama, Akira Ootani, Toshiki Kouno 2013-10-29
8543037 Image forming apparatus Kazuhiro Egawa, Hidetoshi Kami, Kohichi Ohshima 2013-09-24
8512924 Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the photoreceptor Hidetoshi Kami, Kazuhiro Egawa 2013-08-20
8420284 Electrophotographic photoreceptor, image forming apparatus and process cartridge therefor using the electrophotographic photoreceptor Kohichi Ohshima, Hidetoshi Kami, Kazuhiro Egawa 2013-04-16
8351823 Image forming apparatus, image bearing member, and method of manufacturing image bearing member Shinji Nohsho, Mayumi Yoshihara, Mihoko Matsumoto, Kohsuke Yamamoto 2013-01-08
8343698 Photoreceptor, method of manufacturing same, image formation method, image forming apparatus, and process cartridge Yoshiaki Kawasaki, Kazukiyo Nagai 2013-01-01
8293439 Electrophotographic photorecptor, method of manufacturing electrophotographic photorecptor, image forming apparatus, and process cartridge Hidetoshi Kami, Kazuhiro Egawa, Shinji Nohsho, Mayumi Yoshihara, Mihoko Matsumoto +1 more 2012-10-23
8247143 Photoreceptor, image formation method, image forming apparatus and process cartridge Kazuhiro Egawa, Hidetoshi Kami 2012-08-21
8170449 Image forming apparatus and process cartridge Hidetoshi Kami, Kazuhiro Egawa 2012-05-01
8148038 Image bearing member, process cartridge, image forming apparatus and method of forming image bearing member Tetsuro Suzuki, Hiroshi Tamura, Hiroshi Ikuno, Hidetoshi Kami, Takafumi Iwamoto 2012-04-03
8119317 Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the photoreceptor Hidetoshi Kami, Tetsuro Suzuki, Hiroshi Tamura, Hiroshi Ikuno, Takafumi Iwamoto 2012-02-21
8084170 Electrophotographic photoconductor, electrophotographic process cartridge containing the same and electrophotographic apparatus containing the same Hidetoshi Kami, Tetsuro Suzuki, Hiroshi Tamura, Hiroshi Ikuno, Takafumi Iwamoto 2011-12-27
8043773 Image bearing member, image forming apparatus and process cartridge Hiroshi Ikuno, Tetsuro Suzuki, Hidetoshi Kami, Hiroshi Tamura 2011-10-25