RT

Ryoichi Tanaka

SE Seiko Epson: 56 patents #152 of 7,774Top 2%
NK Nippon Furnace Kogyo Kaisha: 18 patents #1 of 49Top 3%
AL Alpha: 4 patents #15 of 110Top 15%
TO Toyota: 3 patents #8,352 of 26,838Top 35%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
NC Nippondenso Co.: 2 patents #1,150 of 3,479Top 35%
NC Nkk Co.: 2 patents #309 of 1,173Top 30%
Shimano: 1 patents #486 of 759Top 65%
TS Toshiba Medical Systems: 1 patents #656 of 1,088Top 65%
PA Panasonic: 1 patents #13,264 of 21,108Top 65%
SG Seiko Group: 1 patents #32 of 90Top 40%
RK Roehm Gmbh & Co. Kg: 1 patents #71 of 187Top 40%
CH Chiyoda: 1 patents #141 of 358Top 40%
Kubota: 1 patents #1,212 of 2,059Top 60%
📍 Yokohama, JP: #105 of 480 inventorsTop 25%
Overall (All Time): #17,886 of 4,157,543Top 1%
90
Patents All Time

Issued Patents All Time

Showing 1–25 of 90 patents

Patent #TitleCo-InventorsDate
12385295 Handle device for vehicle Saeko Tatemichi 2025-08-12
12296600 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2025-05-13
12138935 Bottle set and bottle Takumi Nagashima, Hitoshi Igarashi, Tadahiro Mizutani, Tomoyuki Nakano 2024-11-12
11938739 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2024-03-26
11932022 Ink bottle and bottle set Taku Ishizawa, Tadahiro Mizutani, Manabu Akahane, Koichi Toba, Takumi Nagashima +3 more 2024-03-19
11879277 Inside handle device Saeko Tatemichi, Ryuji Minemura 2024-01-23
11691428 Bottle set and bottle Takumi Nagashima, Hitoshi Igarashi, Tadahiro Mizutani, Tomoyuki Nakano 2023-07-04
D988398 Ink replenish container Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Tadahiro Mizutani 2023-06-06
11639060 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2023-05-02
11597207 Ink bottle and bottle set Taku Ishizawa, Tadahiro Mizutani, Manabu Akahane, Koichi Toba, Takumi Nagashima +3 more 2023-03-07
11298952 Printing system Tadahiro Mizutani, Taku Ishizawa 2022-04-12
11192380 Ink bottle and bottle set Taku Ishizawa, Tadahiro Mizutani, Manabu Akahane, Koichi Toba, Takumi Nagashima +3 more 2021-12-07
11179944 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2021-11-23
11117379 Ink replenish container Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Tadahiro Mizutani 2021-09-14
11065879 Ink refill container and ink refill system Tadahiro Mizutani, Taku Ishizawa 2021-07-20
11001068 Ink replenish container Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Tadahiro Mizutani 2021-05-11
10889123 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2021-01-12
10857802 Liquid container Tadahiro Mizutani, Taku Ishizawa, Atsushi Kobayashi, Koichi Toba, Yoshiaki Shimizu +1 more 2020-12-08
10717287 Ink refill container, ink refill system, and ink refill adapter Tadahiro Mizutani, Manabu Akahane, Makoto Kobayashi, Naomi Kimura, Hideki Okumura +3 more 2020-07-21
10618292 Printer and ink bottle Noriyuki Fukasawa, Taku Ishizawa, Tadahiro Mizutani, Naomi Kimura, Shoma Kudo +1 more 2020-04-14
10538093 Bottle set and bottle Takumi Nagashima, Hitoshi Igarashi, Tadahiro Mizutani, Tomoyuki Nakano 2020-01-21
10471723 Ink replenish container Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Tadahiro Mizutani 2019-11-12
10457065 Liquid container Atsushi Kobayashi, Koichi Toba, Yasuhiko Yoshikawa, Tadahiro Mizutani 2019-10-29
10399344 Liquid container Tadahiro Mizutani, Taku Ishizawa, Atsushi Kobayashi, Koichi Toba, Yoshiaki Shimizu +1 more 2019-09-03
10350901 Ink bottle Tadahiro Mizutani, Koichi Toba, Taku Ishizawa, Manabu Akahane, Tadashi Watanabe +1 more 2019-07-16