Inventor
Kunio Nagai
Inventor
Osaka, JP
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television32%
B22DCasting of metals13%
H04BTransmission10%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding6%
G01RMeasuring electric variables6%
H04HBroadcast communication6%
Y10TTechnical subjects covered by former us classification6%
B08BCleaning in general3%
B30BPresses in general3%
F02BInternal-combustion piston engines3%
PatentTitleYear
10,883,421Actuator of variable compression ratio mechanism and actuator of link mechanism20215,953,048'Video telephone'19995,719,619'Bidirectional broadcasting method, bidirectional broadcasting system and receiver apparatus for bidirectional broadcast'19985,609,077'Tightening device'19975,502,883'Method of tightening threaded member'19965,027,888'Method and apparatus for sealing molten metal for a twin-roll type continous casting apparatus'19914,817,203'Remote control system'19894,703,791'Apparatus and method for continuously producing thin metallic strip'19874,694,885'Apparatus for continuous casting of thin metallic plate'19874,674,556'Method and device for controlling thin metallic strip continuous casting apparatus'19874,620,229'Picture display device'19864,527,204'Remote control system'19854,486,897'Television receiver for demodulating a two-language stereo broadcast signal'19844,472,830'Television receiver for demodulating a two-language stereo broadcast signal'19844,394,691'Remote control system'19834,149,188'Television receiver with display of audio signals'19794,149,189'Television receiver with display of audio signals'19793,983,575'Color saturation and contrast control circuitry responsive to ambient light'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1999Patents assigned to SONY CORP (11)· patent assignee history
1976–1999Based in Tokyo, JP· patent location history
1983Based in Yokohama, JP· patent location history
1984–1989Based in Kanagawa, JP· patent location history
1987–1991Patents assigned to HITACHI SHIPBUILDING ENG CO (4)· patent assignee history
1987–1997Based in Osaka, JP· patent location history
1996–1997Patents assigned to FUJIKIN KK (2)· patent assignee history
2021Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (1)· patent assignee history
2021Based in Atsugi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 11 | 1976–1999 |
| HITACHI SHIPBUILDING ENG CO | 4 | 1987–1991 |
| FUJIKIN KK | 2 | 1996–1997 |
| HITACHI AUTOMOTIVE SYSTEMS LTD | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 6 | 1987–1997 |
| Tokyo, JP | 5 | 1976–1999 |
| Kanagawa, JP | 5 | 1984–1989 |
| Atsugi, JP | 1 | 2021 |
| Yokohama, JP | 1 | 1983 |