Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Kajima Road — 7 Patents

Rank (All Time): #76,663 of 105,732Top 75%
16 inventors
7 Patents All Time

Patents per Year

Patents granted per year, 1984 to 1990Bar chart with a peak of 3 patents in 1989.peak 31984: 1 patents19841985: 1 patents19851987: 1 patents19871989: 3 patents19891990: 1 patents1990

Top Inventors at Kajima Road All Time

Showing 1–16 of 16 inventors

RankNamePatents
1 Mitsuo Fukukawa 5
2 Kazumitsu Asai 4
2 Masayuki Yazawa 4
2 Yoshiharu Okamoto 4
#5 Kunio Shinohara 2
#5 Seiichiro Takizawa 2
#7 Hiroshi Ishikawa 1
#7 Kouhei Mio 1
#7 Kohei Mio 1
#7 Shinji Asada 1
#7 Shigeyuki Takahashi 1
#7 Takeshi Kimura 1
#7 Tetsuo Akiyama 1
#7 Tetsuo Tanaka 1
#7 Toshiki Hatakenaka 1
#7 Yukio Yamagishi 1