TO

Tutomu Ooka

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
📍 Kasai, JP: #2,743 of 5,842 inventorsTop 50%
Overall (All Time): #2,235,060 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6028296 Regenerative heater of diesel engine particulate trap and diesel engine particulate trap using the same heater Katsuhiko Yoro, Masataka Oji 2000-02-22
5958095 Regenerative heater of diesel engine particulate trap and diesel engine particulate trap using the same heater Katsuhiko Yoro, Masataka Oji 1999-09-28