Inventor
Hiromi Kawakami
Inventor
Yokohama, JP
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television29%
H03DDemodulation or transference of modulation from one carrier to another25%
H03FAmplifiers11%
H03JTuning resonant circuits11%
H04BTransmission11%
G01SRadio direction-finding4%
G05FSystems for regulating electric or magnetic variables4%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner4%
H03GControl of amplification4%
PatentTitleYear
4,551,756'Intercarrier sound detecting apparatus for a television receiver'19854,455,573'Television sound receiver'19844,419,695'Television sound receiver'19834,238,771'Muting circuit'19804,234,963'Synchronous detector particularly adapted for a video IF signal'19804,169,248'Oscillating circuit'19794,163,196'Demodulating apparatus with phase shift compensation'19794,156,255'Television receiver with synchronous detection and automatic fine tuning'19794,132,952'Multi-band tuner with fixed broadband input filters'19794,115,737'Multi-band tuner'19784,110,635'Amplifying circuit'19783,987,317'Transistor biasing circuit'19763,986,058'Transistor biasing circuit'19763,975,730'Radar data selection equipment'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1985Patents assigned to SONY CORP (13)· patent assignee history
1976Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history
1976–1985Based in Yokohama, JP· patent location history
1976Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 13 | 1976–1985 |
| NIPPON TELEGRAPH & TELEPHONE | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 13 | 1976–1985 |
| Tokyo, JP | 1 | 1976 |