Inventor
Osamu Hamada
Inventor
Tokyo, JP
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers10%
H04WWireless communication networks10%
G06FElectric digital data processing8%
H04MTelephonic communication8%
B29CShaping or joining of plastics6%
G11BInformation storage based on relative movement between record carrier and transducer6%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers6%
G10HElectrophonic musical instruments5%
H03KPulse technique5%
B23KSoldering or unsoldering3%
PatentTitleYear
8,981,788'Capacitor power supply, voltage monitoring device, method of monitoring voltage, and method of manufacturing capacitor power supply'2015RE045126'Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program'2014RE044185'Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program'20137,947,933'Ceramic heater and method for manufacture thereof'20117,356,308'Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program'20087,299,191'Radio transmission device and method, radio receiving device and method, radio transmitting/receiving system, and storage medium'20077,177,595'Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program'20076,978,242'Radio transmission device and method, radio receiving device and method, radio transmitting/receiving system, and storage medium'20056,125,264'Telephone apparatus'20004,825,035'Control apparatus for energy beam hardening'19894,816,293'Process for coating a workpiece with a ceramic material'19894,758,388'Method of manufacturing ceramic vibration plate for speaker'19884,661,982'Digital graphic equalizer'19874,511,966'Digital signal processing system'19854,446,351'Process for preparing a press die'19844,388,849'Signal processing system'19834,338,674'Digital waveform generating apparatus'19824,194,095'Fluid flow control speaker system'19804,179,969'Tone generator for electrical music instrument'19794,059,807'Pulse width modulated amplifier'19774,054,843'Amplifier with modulated power supply voltage'19774,040,075'Frequency converter'19774,015,213'Pulse width modulated signal amplifier'19774,004,246'Pulse width modulated signal amplifier'19773,976,955'Protective circuit for pulse width modulated signal amplifier'19763,956,716'Pulse width modulated signal amplifier'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–2014Patents assigned to SONY CORP (19)· patent assignee history
1976–2015Based in Tokyo, JP· patent location history
1977–2013Patents assigned to HAMADA OSAMU (2)· patent assignee history
1982–2014Based in Kanagawa, JP· patent location history
1984–1989Patents assigned to MITSUBISHI ELECTRIC CORP (4)· patent assignee history
1984–1989Based in Amagasaki, JP· patent location history
1989Based in Hyogo, JP· patent location history
2011Patents assigned to KYOCERA CORP (1)· patent assignee history
2011Based in Kirishima, JP· patent location history
2013Patents assigned to KAKUDA HIROSHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 19 | 1976–2014 |
| MITSUBISHI ELECTRIC CORP | 4 | 1984–1989 |
| HAMADA OSAMUself | 2 | 1977–2013 |
| KAKUDA HIROSHI | 1 | 2013 |
| KYOCERA CORP | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 11 | 1976–2015 |
| Kanagawa, JP | 9 | 1982–2014 |
| Amagasaki, JP | 3 | 1984–1989 |
| Kirishima, JP | 1 | 2011 |
| Hyogo, JP | 1 | 1989 |