Inventor
IZUMI RYUICHI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “IZUMI RYUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA CORP
5 patentsUS7078611B2Jul 18, 2006
Keyboard instrument
YAMAHA CORP14 citations81
US7875819B2Jan 25, 2011
Panel operator structure for electronic equipment
YAMAHA CORP2 citations59
US7396994B2Jul 8, 2008
Electronic keyboard instrument
YAMAHA CORP2 citations59
US11599135B2Mar 7, 2023
Rotation operation device
YAMAHA CORP0 citations50
US9761391B2Sep 12, 2017
Rotary knob
YAMAHA CORP0 citations49