Inventor
Yasuji Kamata
Inventor
Hitachi, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television27%
H03FAmplifiers20%
G05FSystems for regulating electric or magnetic variables7%
G09GArrangements or circuits for control of indicating devices using static means to present variable information7%
H01CResistors7%
H01FMagnets7%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems7%
H03GControl of amplification7%
H03KPulse technique7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
4,888,561'Amplifier and display using the former'19894,755,768'Amplifier and display using the former'19884,646,029'Variable-gain amplifying circuit'19874,638,308'CRT picture display apparatus'19874,603,008'Critical temperature sensitive resistor material'19864,438,366'Cathode-ray tube driving apparatus'19844,401,922'Convergence distortion correction method and apparatus for color cathode-ray tube'19834,009,460'Inductor'19773,935,526'DC-to-DC converter'19763,931,582'Isolated DC amplifier circuit'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1989Patents assigned to HITACHI LTD (9)· patent assignee history
1976–1989Based in Hitachi, JP· patent location history
1977Patents assigned to HITACHI METALS LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 9 | 1976–1989 |
| HITACHI METALS LTD | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 10 | 1976–1989 |