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USPTO Patent Rankings Data through Dec 31, 2025
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Keiichi Watanabe — 17 Patents

ODOki Data: 3 patents #239 of 635Top 40%
TATayca: 3 patents #8 of 63Top 15%
TATdk Electronics Ag: 2 patents #135 of 503Top 30%
MIMitsubishi Cable Industries: 1 patents #162 of 372Top 45%
NCNippon Chemi-Con: 1 patents #97 of 199Top 50%
OEOtis Elevator: 1 patents #966 of 1,840Top 55%
SLSpansion Llc.: 1 patents #435 of 769Top 60%
SUSubaru: 1 patents #819 of 1,684Top 50%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Ricoh Company: 1 patents #6,943 of 9,818Top 75%
EMElpida Memory: 1 patents #419 of 692Top 65%
Sony: 1 patents #17,321 of 25,231Top 70%
ICIdemitsu Kosan Co.: 1 patents #699 of 1,237Top 60%
TLToyota Central R&D Labs: 1 patents #823 of 1,657Top 50%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
Keiichi Watanabe has been granted 17 US patents while listed as an inventor at Oki Data. The first was granted in 1981 and the most recent in February 2025. Keiichi Watanabe ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Keiichi Watanabe in Tokyo, MH, JP.

Patents per Year

Patents granted per year, 1981 to 2025Bar chart with a peak of 3 patents in 2011.peak 31981: 1 patents19811982: 1 patents1985: 1 patents19851989: 1 patents1995: 1 patents19951997: 1 patents2007: 1 patents20072011: 3 patents2014: 2 patents20142015: 1 patents2022: 2 patents20222024: 1 patents2025: 1 patents2025

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12233861 Object recognition apparatus and non-transitory recording medium Tsubasa Ono, Yu Yoshida 2025-02-25
12113172 Power storage device pre-doping agent and production method for same Yuta Kakimoto, Shunsuke Mito 2024-10-08
11302993 Power storage device composition, power storage device separator using power storage device composition, and power storage device Ryosuke Sugihara, Satoru Tsumeda, Shuichi Ishimoto 2022-04-12
11289277 Lithium ion capacitor positive electrode Ryosuke Sugihara 2022-03-29
9193197 Liquid droplet detecting device, inkjet recording device incorporating same, and liquid droplet detection method Genichiro Kawamichi, Shigeru Morinaga, Hideharu Miki, Hiroshi Ando, Kahei Nakamura +2 more 2015-11-24
8915775 Exhaust system Takeshi Ikeda, Kazuo Koizumi, Hiroyuki Takeda, Tetsuo Koyama 2014-12-23 $23,090,000
8777217 Sheet stacking device and image forming device — 2014-07-15
8079586 Feed device and image forming apparatus Makoto Kitamura 2011-12-20
8016287 Sheet stacking device and image forming device — 2011-09-13
7994239 Aromatic polycarbonate resin composition and molded article thereof Naosuke Mukawa, Yusuke Hayata, Akio Nodera, Hiroshi Yasuda 2011-08-09
7186632 Method of fabricating a semiconductor device having a decreased concentration of phosphorus impurities in polysilicon Kazuo Ogawa, Kiyonori Ohyu, Kensuke Okonogi, Toshihiro Imamura, Hiroyuki Ohta 2007-03-06 $2,227,000
5695040 Escalator step Syuichi Fujieda 1997-12-09 $10,348,000
5459618 Apparatus for producing a video signal representing an animation Haruo Kozono, Yasuhiro Aikawa 1995-10-17 $121,000
4809178 Obstacle data processing system for unmanned vehicle Yoshiki Ninomiya, Gunji Sugimoto, Takero Hongo, Hideo Arakawa 1989-02-28
4548835 Method for fabricating electrodes for use in lead storage batteries Katsuhiro Takahashi, Naoto Hoshihara, HIROYUKI JINBO 1985-10-22 $64,000
4318062 Ultrasonic wave nebulizer driving circuit Sadao Mitsui, Minoru Takahashi 1982-03-02 $44,000
4300131 Device for indicating an abnormal condition in an ultrasonic nebulizer Sadao Mitsui, Minoru Takahashi 1981-11-10 $46,000

Frequent Collaborators

Minoru Takahashi2 shared
Ryosuke Sugihara2 shared
Sadao Mitsui2 shared
Hirotaka Kobayashi1 shared
Syuichi Fujieda1 shared
Hiroshi Yasuda1 shared

Nearby-Ranked Inventors

Michael John Caelwaerts17
Umut Zalluhoglu17
Austino Longo17
Till Bredbeck17
Mircea Grigore17
Achim Klein17
Manesh Nadupparambil Sekharan17
Yoshiaki Nishikawa17
Evan Sparks17