Inventor
YANAGAWA HIROFUMI
JP10 patents
⚠️ This page may combine multiple inventors who share the name “YANAGAWA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER ELECTRONIC CORP
7 patentsUS5233664AAug 3, 1993
Speaker system and method of controlling directivity thereof
PIONEER ELECTRONIC CORP123 citations96
US5953432ASep 14, 1999
Line source speaker system
PIONEER ELECTRONIC CORP122 citations95
US4509184AApr 2, 1985
Stereo sound system
PIONEER ELECTRONIC CORP53 citations95
US5604810AFeb 18, 1997
Sound field control system for a multi-speaker system
PIONEER ELECTRONIC CORP50 citations92
US5604809AFeb 18, 1997
Sound field control system
PIONEER ELECTRONIC CORP26 citations88
US5128999AJul 7, 1992
Sound field correcting apparatus
PIONEER ELECTRONIC CORP19 citations81
US5987143ANov 16, 1999
Method and apparatus for erasing acoustic echo
PIONEER ELECTRONIC CORP10 citations70
TOSHIBA BATTERY
3 patentsUS5490867AFeb 13, 1996
Method of making a rectangular nickel-metal hydride secondary cell
TOSHIBA BATTERY22 citations90
US5372897ADec 13, 1994
Rectangular nickel-metal hydride secondary cell
TOSHIBA BATTERY24 citations90
US5537733AJul 23, 1996
Method of manufacturing a nickel-metal hydride secondary cell
TOSHIBA BATTERY16 citations80