Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Naoki MARUKAWA — 8 Patents

Toyota: 8 patents #3,687 of 26,838Top 15%
Toyota, JP: #911 of 5,020 inventorsTop 20%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Naoki MARUKAWA has been granted 8 US patents while listed as an inventor at Toyota. The first was granted in 2019 and the most recent in November 2025. Naoki MARUKAWA ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Naoki MARUKAWA in Toyota, JP.

Patents per Year

Patents granted per year, 2019 to 2023Bar chart with a peak of 2 patents in 2021.peak 22019: 1 patents20192021: 2 patents20212022: 2 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12479281 Vehicle drive apparatus Yongjoo RYOO 2025-11-25
12473967 Oil cooler Hiroshi KUSAKA 2025-11-18
11658550 Power control unit Hiroshi Yaguchi 2023-05-23 $436,000
11440394 Vehicle drive system Hiroshi Yaguchi, Naoyuki Kishimoto, Shuichi Iwata 2022-09-13 $469,000
11223305 Vehicle driving device Naoyuki Kishimoto, Hiroshi Yaguchi, Shuichi Iwata, Hirotaka Koyanagi 2022-01-11 $1,144,000
11153983 Power control unit and method of assembling the same 2021-10-19 $529,000
10994600 Layout structure for front compartment of hybrid vehicle Shuichi Iwata, Hiroshi Yaguchi, Naoyuki Kishimoto 2021-05-04 $725,000
10259339 Structure of mounting power control device in vehicle Shinichi Miura 2019-04-16 $360,000