Inventor
HAMADA OSAMU
26 patents
⚠️ This page may combine multiple inventors who share the name “HAMADA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
18 patentsUS4054843AOct 18, 1977
Amplifier with modulated power supply voltage
SONY CORP70 citations96
US7356308B2Apr 8, 2008
Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program
SONY CORP19 citations92
US7177595B2Feb 13, 2007
Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program
SONY CORP13 citations92
US4661982AApr 28, 1987
Digital graphic equalizer
SONY CORP46 citations92
US4015213AMar 29, 1977
Pulse width modulated signal amplifier
SONY CORP35 citations92
US6125264ASep 26, 2000
Telephone apparatus
SONY CORP40 citations90
US4194095AMar 18, 1980
Fluid flow control speaker system
SONY CORP37 citations89
US4059807ANov 22, 1977
Pulse width modulated amplifier
SONY CORP24 citations82
US3976955AAug 24, 1976
Protective circuit for pulse width modulated signal amplifier
SONY CORP20 citations82
US6978242B2Dec 20, 2005
Radio transmission device and method, radio receiving device and method, radio transmitting/receiving system, and storage medium
SONY CORP5 citations74
US4511966AApr 16, 1985
Digital signal processing system
SONY CORP18 citations74
US4388849AJun 21, 1983
Signal processing system
SONY CORP7 citations74
US4338674AJul 6, 1982
Digital waveform generating apparatus
SONY CORP19 citations74
US7299191B2Nov 20, 2007
Radio transmission device and method, radio receiving device and method, radio transmitting/receiving system, and storage medium
SONY CORP3 citations63
US4179969ADec 25, 1979
Tone generator for electrical music instrument
SONY CORP4 citations63
US3956716AMay 11, 1976
Pulse width modulated signal amplifier
SONY CORP6 citations63
USRE45126ESep 9, 2014
Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program
SONY CORP0 citations52
US4040075AAug 2, 1977
Frequency converter
SONY CORP1 citations52
MITSUBISHI ELECTRIC CORP
4 patentsUS4825035AApr 25, 1989
Control apparatus for energy beam hardening
MITSUBISHI ELECTRIC CORP27 citations92
US4816293AMar 28, 1989
Process for coating a workpiece with a ceramic material
MITSUBISHI ELECTRIC CORP26 citations89
US4446351AMay 1, 1984
Process for preparing a press die
MITSUBISHI ELECTRIC CORP26 citations82
US4758388AJul 19, 1988
Method of manufacturing ceramic vibration plate for speaker
MITSUBISHI ELECTRIC CORP11 citations64