Takashi Hagiwara

SC Senju Metal Industry Co.: 9 patents #24 of 349Top 7%

Yamaha: 8 patents #321 of 2,001Top 20%

SK Showa Shell Sekiyu K.K.: 5 patents #5 of 82Top 7%

SE Sigma Enterprises: 4 patents #3 of 9Top 35%

HO Horiba: 4 patents #114 of 604Top 20%

DE Denso: 3 patents #3,857 of 11,792Top 35%

NE Nec: 3 patents #4,195 of 14,502Top 30%

NC Nidek Co.: 3 patents #123 of 365Top 35%

SK Showa Shell Sekiyu Kabushiki Kaisha: 3 patents #7 of 60Top 15%

SI Sigma: 3 patents #1 of 40Top 3%

NC Nippondenso Co.: 2 patents #1,150 of 3,479Top 35%

SC Shin-Etsu Chemical Co.: 2 patents #1,026 of 2,176Top 50%

Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%

SO Sony: 1 patents #17,262 of 25,231Top 70%

Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%

📍 Tochigi, JP: #54 of 2,789 inventorsTop 2%

Overall (All Time): #52,374 of 4,157,543Top 2%

Patents All Time

Issued Patents All Time

Showing 51–51 of 51 patents

Patent #	Title	Co-Inventors	Date
4565275	Optoelectronic coin entry sensing system for coin operated machines	—	1986-01-21