Hiroshi Nakai

Ricoh Company: 55 patents #171 of 9,818Top 2%

Canon: 25 patents #2,400 of 19,416Top 15%

SI Sanshin Industries: 14 patents #29 of 319Top 10%

AC Amada Co.: 10 patents #14 of 479Top 3%

PA Panasonic: 9 patents #2,933 of 21,108Top 15%

DA Daihen: 3 patents #87 of 305Top 30%

SC Sk Kaken Co.: 2 patents #3 of 14Top 25%

RE Renesas Electronics: 2 patents #1,855 of 4,529Top 45%

SC Shionogi & Co.: 1 patents #620 of 1,054Top 60%

MC Mitsubishi Gas Chemical Company: 1 patents #1,048 of 1,727Top 65%

SC Stanley Electric Co.: 1 patents #550 of 1,072Top 55%

Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%

Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%

FL Furuno Electric Company Limited: 1 patents #215 of 407Top 55%

Overall (All Time): #8,961 of 4,157,543Top 1%

126

Patents All Time

Issued Patents All Time

Showing 126–126 of 126 patents

Patent #	Title	Co-Inventors	Date
4271490	Ultrasonic detection system	Kiyomi Minohara, Akira Sugiyama, Masajiro Iida, Hideharu Morimatsu, Yuzo Kobayashi	1981-06-02