Assignee
QUESTECH LTD
GB·12 granted patents·170 citations·filing 1987–1998
Top patents by PatentIndex Score
12 records- 0181US5663868AStackable electronic equipment assembly with improved circuit board cooling arrangementQUESTECH LTD·Filed 1995·Granted Sep 2, 1997·54 cites·6 claims
- 0281US5153726ARecording and editing of moving television picturesQUESTECH LTD·Filed 1987·Granted Oct 6, 1992·38 cites·6 claims
- 0359US6239846B1Digital video effects, apparatus and methodQUESTECH LTD·Filed 1998·Granted May 29, 2001·25 cites·18 claims
- 0448US4918530AProcessing of video image signalsQUESTECH LTD·Filed 1989·Granted Apr 17, 1990·10 cites·5 claims
- 0547US4879597AProcessing of video image signalsQUESTECH LTD·Filed 1988·Granted Nov 7, 1989·12 cites·9 claims
- 0637US5293233ADigital video effects with image mapping on to curved surfaceQUESTECH LTD·Filed 1991·Granted Mar 8, 1994·9 cites·17 claims
- 0735US5227884AProcessing of video image signalsQUESTECH LTD·Filed 1991·Granted Jul 13, 1993·4 cites·11 claims
- 0835US4847691AProcessing of video image signalsQUESTECH LTD·Filed 1988·Granted Jul 11, 1989·9 cites·2 claims
- 0932US5220428ADigital video effects apparatus for image transpositionQUESTECH LTD·Filed 1989·Granted Jun 15, 1993·3 cites·11 claims
- 1029US5524091AAccurate digital dividerQUESTECH LTD·Filed 1994·Granted Jun 4, 1996·3 cites·5 claims
- 1128US5067133AError-correction of stored television signalsQUESTECH LTD·Filed 1987·Granted Nov 19, 1991·0 cites·8 claims
- 1225US5822015AProviding an accurate tally indication of sources in use for outputQUESTECH LTD·Filed 1995·Granted Oct 13, 1998·3 cites·20 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →