Inventor
SANO TSUNENORI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “SANO TSUNENORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA CORP
6 patentsUS12425775B2Sep 23, 2025
Magnetic circuit for acoustic transducer, and speaker unit
YAMAHA CORP0 citations61
US11979724B2May 7, 2024
Speaker diaphragm and headphone
YAMAHA CORP0 citations60
US11716570B2Aug 1, 2023
Speaker diaphragm and method of producing speaker diaphragm
YAMAHA CORP0 citations60
US11432072B2Aug 30, 2022
Speaker diaphragm and production method thereof
YAMAHA CORP0 citations60
US12477283B2Nov 18, 2025
Speaker unit
YAMAHA CORP0 citations59
US11330362B2May 10, 2022
Acoustic device
YAMAHA CORP0 citations49