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USPTO Patent Rankings Data through Dec 31, 2025
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Kazu Nagahama — 8 Patents

TATadano: 8 patents #11 of 139Top 8%
Samukawa, JP: #95 of 728 inventorsTop 15%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Kazu Nagahama has been granted 8 US patents while listed as an inventor at Tadano. The first was granted in 2017 and the most recent in June 2025. Kazu Nagahama ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Kazu Nagahama in Samukawa, JP.

Patents per Year

Patents granted per year, 2017 to 2025Bar chart with a peak of 3 patents in 2025.peak 32017: 1 patents20172023: 2 patents20232024: 2 patents20242025: 3 patents2025

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
12330921 Work machine Masahide Zushi, Manato Shirai 2025-06-17
12297085 Work machine Manato Shirai, Masahide Zushi 2025-05-13
12227396 Work machine Masahide Zushi, Toshihiko Fukuoka, Manato Shirai 2025-02-18
11958726 Work machine Masahide Zushi, Toshihiko Fukuoka, Manato Shirai 2024-04-16
11926512 Work machine Manato Shirai, Masahide Zushi 2024-03-12
11629035 Crane Masahide Zushi 2023-04-18
11542131 Crane Masahide Zushi 2023-01-03
9796566 Boom extension and contraction mechanism for crane apparatus Masanori Matsuda 2017-10-24

Frequent Collaborators

Masahide Zushi7 shared
Manato Shirai5 shared
Toshihiko Fukuoka2 shared
Masanori Matsuda1 shared

Nearby-Ranked Inventors

Suryatej Gundavelli8
Hajime Yoshizawa8
Takahisa TATEKAWA8
Hye-Jin GONG8
Yang Ji8
Koichi Sekimizu8
Sandeep Rekhi8
Tejas Pradip Rode8
Jonatan Hörder8