Inventor
KAWAKAMI MASAFUMI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “KAWAKAMI MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PANASONIC IP MAN CO LTD
7 patentsUS9758213B2Sep 12, 2017
Electric assist bicycle
PANASONIC IP MAN CO LTD17 citations82
US12195137B2Jan 14, 2025
Power transmission unit for electric bicycles, and electric bicycle
PANASONIC IP MAN CO LTD1 citations63
US12195136B2Jan 14, 2025
Power transmission unit for electric bicycles, and electric bicycle
PANASONIC IP MAN CO LTD0 citations62
US12539937B2Feb 3, 2026
Motor unit with improved heat dissipation capability for use in electric bicycles
PANASONIC IP MAN CO LTD0 citations61
US12049284B2Jul 30, 2024
Motor unit for use in electric bicycles, and electric bicycle
PANASONIC IP MAN CO LTD1 citations61
US9381972B2Jul 5, 2016
Power-assisted bicycle
PANASONIC IP MAN CO LTD2 citations61
US12589829B2Mar 31, 2026
Motor unit and electric bicycle
PANASONIC IP MAN CO LTD0 citations50
SUMITOMO RUBBER IND
4 patentsUS4664167AMay 12, 1987
Radial tire for industrial vehicles
SUMITOMO RUBBER IND7 citations73
US4476455AOct 9, 1984
Tire deflation warning device
SUMITOMO RUBBER IND11 citations72
USD290828SJul 14, 1987
Automobile tire
SUMITOMO RUBBER IND3 citations62
USD289889SMay 19, 1987
Automobile tire
SUMITOMO RUBBER IND3 citations62