Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KH

Keiji Hashimoto — 38 Patents

Toyota: 35 patents #416 of 26,838Top 2%
Dai Nippon Printing Co.: 4 patents #587 of 2,222Top 30%
OEOtis Elevator: 3 patents #506 of 1,840Top 30%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
Panasonic: 1 patents #13,316 of 21,108Top 65%
AKAraco Kabushiki Kaisha: 1 patents #30 of 107Top 30%
MIMizuno: 1 patents #145 of 221Top 70%
ACAsmo Co.: 1 patents #369 of 745Top 50%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
RTRenesas Technology: 1 patents #1,991 of 3,337Top 60%
Kariya, JP: #127 of 4,822 inventorsTop 3%
Overall (All Time): #84,675 of 4,157,543Top 3%
38 Patents All Time
Keiji Hashimoto has been granted 38 US patents while listed as an inventor at Toyota. The first was granted in 1995 and the most recent in November 2020. Keiji Hashimoto ranks #84,675 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Keiji Hashimoto in Kariya, JP.

Patents per Year

Patents granted per year, 1995 to 2020Bar chart with a peak of 6 patents in 2020.peak 61995: 1 patents19951996: 1 patents1997: 2 patents19971998: 2 patents2002: 1 patents20022004: 1 patents2005: 2 patents20052008: 1 patents2009: 1 patents20092011: 1 patents2012: 1 patents20122013: 1 patents2014: 1 patents20142015: 4 patents2017: 4 patents20172018: 3 patents2019: 5 patents20192020: 6 patents2020

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10840522 Fuel cell Takashi Kondo, Daisuke KANNO 2020-11-17 $823,000
10790532 Fuel cell stack and dummy cell Daisuke KANNO, Takenori Yamasaki, Atsushi Ida, Daisuke Hayashi, Shuji Kurita +1 more 2020-09-29 $847,000
10727511 Fuel cell Kousuke Kawajiri, Satoshi Futami 2020-07-28 $450,000
10727523 Fuel cell stack Daisuke KANNO, Takenori Yamasaki, Atsushi Ida, Daisuke Hayashi, Shuji Kurita +1 more 2020-07-28 $450,000
10651495 Fuel cell stack Satoshi Futami, Kousuke Kawajiri, Nobuaki Nonoyama 2020-05-12 $554,000
10547069 Fuel cell having end cell with bypass passage Takashi Kondo 2020-01-28 $553,000
10511036 Fuel cell module with arranged ridge segments Hiroya Nakaji, Kazunori Shibata, Hiroki Okabe, Kousuke Kawajiri, Satoshi Futami +1 more 2019-12-17 $464,000
10347920 Gas channel forming plate for fuel cell and fuel cell stack Yoshinori Shinozaki, Satoshi Futami, Kousuke Kawajiri 2019-07-09 $372,000
10259683 Method for controlling an elevator system Takahiro Yamada, Naoki Taniguchi, Kenichi Ohmura 2019-04-16
10263272 Gas flow path forming bodies of fuel cell, and fuel cell Kousuke Kawajiri, Satoshi Futami 2019-04-16 $360,000
10252882 Elevator motion alert system Daisuke Meguro, Hisanori Seki, Takayuki Suzuki 2019-04-09
9994429 Handrail with a built-in RBI Naoki Taniguchi, Kenichi Ohmura, Takahiro Yamada 2018-06-12
9960433 Gas channel forming member for fuel cells, and fuel cell Kousuke Kawajiri, Satoshi Futami 2018-05-01 $313,000
9917310 Gas flow channel forming body for fuel cell, and fuel cell Kousuke Kawajiri, Satoshi Futami 2018-03-13 $779,000
9825314 Fuel cell and manufacturing method of expanded metal Atsushi Maeda, Kazumi Sugita, Atsushi Ida, Shingo Morikawa, Satoshi Futami 2017-11-21 $387,000
9780389 Fuel cell separator and production method for fuel cell separator Eiichiro Morozumi, Takatoshi Asaoka, Yukihiro Suzuki 2017-10-03 $390,000
9724855 Roll molding device Tomoyuki Takamura, Tomio Kinoshita, Manabu Kinoshita 2017-08-08 $538,000
9561532 Roll forming device Tomoyuki Takamura 2017-02-07 $860,000
9190680 Fuel battery Kousuke Kawajiri, Satoshi Futami 2015-11-17 $914,000
9160020 Fuel cell Kousuke Kawajiri, Satoshi Futami, Takamasa Kanie, Kazunari Moteki, Tomokazu Hayashi 2015-10-13 $887,000
9160026 Gas flow passage forming member, method of manufacturing the gas flow passage forming member, and device for forming the gas flow passage forming member Satoshi Futami, Tomokazu Hayashi 2015-10-13 $887,000
9065090 Fuel battery Kousuke Kawajiri, Satoshi Futami, Tomokazu Hayashi 2015-06-23 $928,000
8835064 Fuel battery Kousuke Kawajiri, Satoshi Futami 2014-09-16 $766,000
8445160 Fuel cell with gas passage forming member and water ingression preventing means Yukihiro Suzuki 2013-05-21 $1,707,000
8206865 Separator for fuel cell 2012-06-26 $1,113,000