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USPTO Patent Rankings Data through Sept 30, 2025
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Gunma Prefecture — 3 Patents in 2021

Rank (2021): #11,504 of 31,507Top 40%
8 inventors
3 Patents 2021

Top Inventors at Gunma Prefecture 2021

Showing 1–8 of 8 inventors

RankNamePatents
1 Atsushi Kajihara 2
1 Hiroshi Miyajima 2
1 Masaki Gotoh 2
#4 Jun Ozawa 1
#4 Naoyuki Utsumi 1
#4 Osamu Niijima 1
#4 Takashi Suda 1
#4 Tomoaki Sakata 1