Individual holder
CAMPBELL JACK J
US·4 granted patents·113 citations·filing 1989–1991
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0183US5019904AScan converter with adaptive vertical filter for single bit computer graphics systemsCAMPBELL JACK J·Filed 1989·Granted May 28, 1991·53 cites·20 claims
- 0272US5136385AAdaptive vertical gray scale filter for television scan converterCAMPBELL JACK J·Filed 1991·Granted Aug 4, 1992·35 cites·2 claims
- 0358US4939576AAdaptive ringing reducer for television signal processingCAMPBELL JACK J·Filed 1989·Granted Jul 3, 1990·14 cites·14 claims
- 0447US5132795AAdaptive vertical gray scale filter for television scan converterCAMPBELL JACK J·Filed 1990·Granted Jul 21, 1992·11 cites·14 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →