Inventor
David Ross Jackson
Inventor
Indianapolis, IN, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television59%
H01JElectric discharge tubes or discharge lamps12%
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 systems12%
B29CShaping or joining of plastics6%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%
G09GArrangements or circuits for control of indicating devices using static means to present variable information6%
PatentTitleYear
7,239,493'Method for preventing the generation of excessive high voltage'20077,030,575'Deflection supply voltage feedback control in conjunction with frequency change'20066,847,404'Video display protection circuit'20056,661,188'Cathode ray tube filament voltage control with a multifrequency deflection scanner'20036,282,071'Frequency dependent X-ray protection for a multimedia monitor'20015,982,641'High-voltage power supply for video display apparatus'19995,475,286'Deflection waveform correction circuit'19955,355,058'Horizontal deflection waveform correction circuit'19945,323,092'Deflection waveform correction circuit'19945,118,999'Focus coil current generator for a cathode ray tube'19924,132,481'Cross-talk balancing circuit for spectrophotometers'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979Patents assigned to PERKIN ELMER LTD (1)· patent assignee history
1979Based in High Wycombe, GB· patent location history
1992–1999Patents assigned to THOMSON CONSUMER ELECTRONICS (5)· patent assignee history
1992–2007Based in Indianapolis, IN, US· patent location history
2001–2005Patents assigned to THOMSON LICENSING SA (3)· patent assignee history
2006–2007Patents assigned to THOMSON LICENSING (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| THOMSON CONSUMER ELECTRONICS | 5 | 1992–1999 |
| THOMSON LICENSING SA | 3 | 2001–2005 |
| THOMSON LICENSING | 2 | 2006–2007 |
| PERKIN ELMER LTD | 1 | 1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Indianapolis, IN, US | 10 | 1992–2007 |
| High Wycombe, GB | 1 | 1979 |