Inventor
MATSUBARA RYOJI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “MATSUBARA RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PUBLIC WORKS RES INST MINISTRY
3 patentsUS6337637B1Jan 8, 2002
Collision with pedestrian prevention system
PUBLIC WORKS RES INST MINISTRY77 citations93
US6459991B1Oct 1, 2002
Collision in right/left turn prevention system
PUBLIC WORKS RES INST MINISTRY41 citations89
US6360171B1Mar 19, 2002
Bumping prevention system
PUBLIC WORKS RES INST MINISTRY22 citations89
HITACHI METALS LTD
3 patentsUS10530032B2Jan 7, 2020
90-degree hybrid circuit
HITACHI METALS LTD0 citations40
US9525213B2Dec 20, 2016
Antenna device
HITACHI METALS LTD0 citations39
US10403948B2Sep 3, 2019
Adjustable phase shifter including a signal conductor, a movable dielectric plate and a transformer unit, where the transformer unit defines overlapped and non-overlapped portions with respect to the signal conductor
HITACHI METALS LTD0 citations38