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USPTO Patent Rankings Data through Dec 31, 2025
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Yuki Ejiri — 15 Patents

Hitachi: 8 patents #5,193 of 28,497Top 20%
BIBitkey: 5 patents #1 of 3Top 35%
HCHitachi Automotive Engineering Co.: 1 patents #156 of 314Top 50%
HSHitachi Automotive Systems: 1 patents #965 of 1,636Top 60%
HEHitachi Vehicle Energy: 1 patents #57 of 95Top 60%
Tokyo, JP: #10,391 of 90,295 inventorsTop 15%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Yuki Ejiri has been granted 15 US patents while listed as an inventor at Hitachi. The first was granted in 1988 and the most recent in September 2025. Yuki Ejiri ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Yuki Ejiri in Tokyo, JP.

Patents per Year

Patents granted per year, 1988 to 2025Bar chart with a peak of 3 patents in 2024.peak 31988: 2 patents19881993: 1 patents19932005: 1 patents20052006: 2 patents20062007: 2 patents20072013: 1 patents20132018: 1 patents20182024: 3 patents20242025: 2 patents2025

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12406096 Utilization management device, utilization management method, and program Hiroshi Yamamoto 2025-09-02
12219059 Utilization management system, management device, utilization control device, user terminal, utilization management method, and program Hiroshi Yamamoto 2025-02-04
12170733 Utilization management system, management device, utilization control device, utilization management method, and computer-readable program Hiroshi Yamamoto 2024-12-17
11971973 Uilization control system, use permit issuance device, uilization control method, and computer-readable program Hiroshi Yamamoto 2024-04-30
11956625 Utilization control system and utilization control method Hiroshi Yamamoto 2024-04-09
9912024 Battery block and battery module having same Naoki Kojima, Michihiro Kimura 2018-03-06
D685727 Assembled battery Naoki Kojima, Michihiro Kimura 2013-07-09
7243635 Throttle valve opening and closing device Masahiko Soshino, Takehiko Kowatari, Yuzo Kadomukai, Kenji Ono, Yasuhiro Kamimura +4 more 2007-07-17 $237,000
7174877 Throttle valve opening and closing device Masahiko Soshino, Takehiko Kowatari, Yuzo Kadomukai, Kenji Ono, Yasuhiro Kamimura +4 more 2007-02-13 $171,000
7117844 Connecting structure between rotary shaft and metal plate and method of connecting therebetween Masayuki Kobayashi, Koji Harada, Keiichi Uraki 2006-10-10 $99,000
7040283 Throttle valve opening and closing device Masahiko Soshino, Takehiko Kowatari, Yuzo Kadomukai, Kenji Ono, Yasuhiro Kamimura +4 more 2006-05-09 $144,000
6932051 Throttle valve opening and closing device Masahiko Soshino, Takehiko Kowatari, Yuzo Kadomukai, Kenji Ono, Yasuhiro Kamimura +4 more 2005-08-23 $97,000
5188073 Fluid control valve, valve support member therefor and idling air amount control apparatus for automobile using the fluid control valve Tsutomu Okazaki, Koichiro Yamada, Chiaki Niida, Hiroaki Saeki, Hideki Honma 1993-02-23 $29,000
4747380 Throttle valve control device for internal combustion engines Tomoo Ito 1988-05-31 $73,000
4735179 Automatic control apparatus for engine throttle valve Tomoo Ito 1988-04-05 $131,000

Frequent Collaborators

Hiroshi Yamamoto5 shared
Masahiko Soshino4 shared
Norihiro Isozaki4 shared
Takehiko Kowatari4 shared
Kenji Ono4 shared
Yuzo Kadomukai4 shared

Nearby-Ranked Inventors

Naoya Kasahara15
Aaron Larry Snyder15
Avishay Meron15
Stuart Hatfield15
Satoshi KUNIYASU15
Ashton Mason15
Theodore Yuchiang Cheng15
Richard Sharbaugh15
Rajen Bhatt15