TK

Tatsuya Kubo

Ricoh Company: 50 patents #228 of 9,818Top 3%
CK Casio Keisanki: 12 patents #19 of 124Top 20%
SI Sumitomo Rubber Industries: 12 patents #153 of 1,637Top 10%
Casio Computer Co.: 3 patents #744 of 1,970Top 40%
DE Denso: 3 patents #3,857 of 11,792Top 35%
RS Ricoh Printing Systems: 2 patents #64 of 200Top 35%
GC Goo Chemical Co.: 2 patents #11 of 39Top 30%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #19,792 of 4,157,543Top 1%
85
Patents All Time

Issued Patents All Time

Showing 1–25 of 85 patents

Patent #TitleCo-InventorsDate
12409971 Packing member, toner container, and packing method Shuntaroh Tamaki, Seiji Terazawa, Yosio Sano, Teruo Shibata 2025-09-09
12399448 Toner container and image forming apparatus Kentaro Nodera, Hideo Yoshizawa 2025-08-26
12286506 Organic sulfur material, electrode, and lithium-ion secondary batteries, and producing method Fumiya Chujo 2025-04-29
D1062861 Toner container Shuntaro Tamaki, Seiji Terazawa, Gen Kitamura, Hideo Yoshizawa 2025-02-18
12206107 Sulfur-based active material, electrode, non-aqueous electrolyte secondary battery and producing methods thereof Fumiya Chujo 2025-01-21
12189331 Positioning member, holding device, process cartridge, and image forming apparatus Kazuki Yogosawa, Yuuki Tsuchiya, Shinya Karasawa 2025-01-07
11953843 Powder container, powder supply device, and image forming apparatus including same Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka +1 more 2024-04-09
11880160 Filter holding device, developing device, process cartridge, image forming apparatus, and filter Hotaru HASHIKAWA, Kazuki Yogosawa, Yuta YABUTA, Takuya Suganuma 2024-01-23
11876228 Organic sulfur material, electrode, and lithium-ion secondary batteries, and producing method Fumiya Chujo 2024-01-16
11813874 Process cartridge and image forming apparatus incorporating same Shinya Karasawa, Kazuki Yogosawa, Yuuki Tsuchiya 2023-11-14
11774878 Amount-of-remaining-toner detecting device, image forming apparatus, method for detecting amount of remaining toner, and non-transitory recording medium Ryotaro Konno, Junichi Matsumoto, Yuki Osato, Yuusuke Tomura, Masashi Hommi 2023-10-03
11604423 Remaining toner amount detection device, image forming apparatus, and remaining toner amount detection method Yuki Osato, Masashi Hommi, Yuusuke Tomura, Ryotaro Konno, Junichi Matsumoto 2023-03-14
11552298 Electrode for lithium-ion secondary battery Naoto Yamashita, Takashi Mukai, Masahiro Yanagida, Fumiya Chujo 2023-01-10
11422483 Powder container, powder supply device, and image forming apparatus including same Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka +1 more 2022-08-23
11367868 Sulfur-based positive-electrode active material, positive-electrode and lithium-ion secondary battery Fumiya Chujo, Yasuhisa Minagawa 2022-06-21
11215948 Powder collection device and image forming apparatus incorporating same Shuntaroh Tamaki, Junichi Matsumoto, Hiroaki Okamoto 2022-01-04
11201326 Metal-ion secondary battery Akihiro YAMANO, Masanori Morishita, Tetsuo Sakai, Hideya Yoshitake 2021-12-14
11094939 Sulfur-based active material Fumiya Chujo 2021-08-17
11069893 Sulfur-based active material Fumiya Chujo 2021-07-20
11029623 Powder amount detector including a pair of measuring electrodes Junichi Matsumoto, Shuntaroh Tamaki, Hiroaki Okamoto 2021-06-08
10969708 Developing device, process cartridge, and image forming apparatus Takuya Suganuma 2021-04-06
10871729 Powder container, powder supply device, and image forming apparatus including same Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka +1 more 2020-12-22
10847279 Method for making a sulfur-based positive-electrode active material Toshikatsu Kojima, Tetsuo Sakai, Akihiro YAMANO, Masahiro Yanagida 2020-11-24
10649367 Powder supply device and image forming apparatus incorporating same Junichi Matsumoto, Shuntaroh Tamaki, Hiroaki Okamoto 2020-05-12
10606187 Powder container, powder supply device, and image forming apparatus including same Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka +1 more 2020-03-31