Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
MA

Masaaki Aoki — 53 Patents

Hitachi: 18 patents #2,067 of 28,497Top 8%
SCSumitomo Special Metals Co.: 17 patents #7 of 262Top 3%
NCNeomax Co.: 8 patents #6 of 95Top 7%
Mazda Motor: 2 patents #1,722 of 4,755Top 40%
SKShowa Shell Sekiyu K.K.: 2 patents #17 of 82Top 25%
TITexas Instruments: 2 patents #5,248 of 12,488Top 45%
NDNtt Docomo: 1 patents #1,030 of 1,706Top 65%
HSHitachi Automotive Systems Steering: 1 patents #28 of 48Top 60%
HUHiroshima University: 1 patents #158 of 421Top 40%
SCShin Meiwa Industry Co.: 1 patents #23 of 74Top 35%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #49,054 of 4,157,543Top 2%
53 Patents All Time

Issued Patents All Time

Showing 51–53 of 53 patents

Patent #TitleCo-InventorsDate
4435962 Refrigerating apparatus Taketoshi Mochizuki, Kazuya Matsuo, Mituo Kudo, Akira Arai, Junichi Yamada +3 more 1984-03-13
4280131 Pleochroic light emitting diode and method of fabricating the same Yuichi Ono, Kazuhiro Ito, Mitsuhiro Mori, Kazuhiro Kurata 1981-07-21
4183039 Light emitting semiconductor device Yuichi Ono, Makoto Morioka, Kazuhiro Ito, Mitshiuro Mori, Kazuhiro Kurata 1980-01-08