TK

Tokio Kohama

NS Nippon Soken: 68 patents #5 of 1,540Top 1%
TO Toyota: 25 patents #786 of 26,838Top 3%
NC Nippondenso Co.: 16 patents #65 of 3,479Top 2%
DE Denso: 3 patents #3,857 of 11,792Top 35%
KU Kureha: 1 patents #186 of 354Top 55%
📍 Nishio, JP: #2 of 363 inventorsTop 1%
Overall (All Time): #24,570 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 76–77 of 77 patents

Patent #TitleCo-InventorsDate
4196706 Exhaust gas recirculation system for internal combustion engine Hideki Obayashi, Tadashi Ozaki, Hidetaka Nohira 1980-04-08
4181110 Exhaust gas recirculation system for internal combustion engine Hideki Obayashi, Tadashi Ozaki, Hidetaka Nohira 1980-01-01