Inventor · disambiguated record
David J. Ketcham
Also filed as: KETCHAM DAVID J
3 granted patents·152 citations·filing 1975–1975
77Inventor score
Files withHUGHES AIRCRAFT CO3
Top patents by PatentIndex Score
3 records- 0188US3983320ARaster display histogram equalizationHUGHES AIRCRAFT CO·Filed 1975·Granted Sep 28, 1976·55 cites·10 claims
- 0287US3979555AHistogram equalization system for display improvementHUGHES AIRCRAFT CO·Filed 1975·Granted Sep 7, 1976·60 cites·10 claims
- 0383US3996421ATelevision display utilizing local area brightness controlHUGHES AIRCRAFT CO·Filed 1975·Granted Dec 7, 1976·37 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →