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

Fumio Ohtomo

TOTopcon: 227 patents #1 of 684Top 1%
TKTokyo Kogaku Kikai: 16 patents #1 of 143Top 1%
Kabushiki Kaisha Toshiba: 8 patents #3,802 of 21,451Top 20%
KKKabushiki Kaisha Tokyo Kikai: 1 patents #6 of 20Top 30%
KTKabushiki Kaisha Top: 1 patents #53 of 213Top 25%
TOToshiba: 1 patents #1,121 of 2,688Top 45%
Asaka, JP: #1 of 378 inventorsTop 1%
Overall (All Time): #1,853 of 4,157,543Top 1%
258 Patents All Time

Issued Patents All Time

Showing 251–258 of 258 patents

Patent #TitleCo-InventorsDate
4531833 Optical range finder 1985-07-30
4484816 Apparatus for measuring length or angle Kazuaki Kimura 1984-11-27
4465373 Encoder Hiroshi Tamaki, Kazuaki Kimura 1984-08-14
4413904 Electro-optical range finder using three modulation frequencies Toshio Hamada 1983-11-08
4412745 Apparatus for measuring length or angle Kazuaki Kimura 1983-11-01
4384204 Absolute encoder Hiroshi Tamaki, Kazuaki Kimura 1983-05-17
4292514 Apparatus for, and method for, achieving a temperature compensation of an avalanche photodiode 1981-09-29
4269227 Valve apparatus Tatsuo Araki, Yasuo Okamoto, Hiroto Atsumi 1981-05-26