Inventor
TSUNODA NAOTAKA
JP20 patents
⚠️ This page may combine multiple inventors who share the name “TSUNODA NAOTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
13 patentsUS6738487B1May 18, 2004
Earphone
SONY CORP166 citations99
US5949896ASep 7, 1999
Earphone
SONY CORP352 citations98
US6744901B2Jun 1, 2004
Headphone
SONY CORP55 citations95
US7274798B2Sep 25, 2007
Speaker device
SONY CORP17 citations92
US7245736B2Jul 17, 2007
Headphone device
SONY CORP20 citations92
US7983438B2Jul 19, 2011
Headphone device
SONY CORP8 citations84
US7609026B2Oct 27, 2009
Charging device and charging method
SONY CORP12 citations84
US7873177B2Jan 18, 2011
Headphone apparatus and headphone system
SONY CORP11 citations83
US7853035B2Dec 14, 2010
Headphones and headphones placement device
SONY CORP12 citations81
US9578410B2Feb 21, 2017
Sound reproduction device
SONY CORP3 citations72
US7813522B2Oct 12, 2010
Loudspeaker device
SONY CORP2 citations63
US10212504B2Feb 19, 2019
Earphone device
SONY CORP0 citations48
US9361902B2Jun 7, 2016
Earhole-wearable sound collection device, signal processing device, and sound collection method
SONY CORP0 citations41