Inventor · disambiguated record
Frederick L. Drain
Also filed as: DRAIN FREDERICK L
2 granted patents·35 citations·filing 1987–1993
61Inventor score
Top patents by PatentIndex Score
2 records- 0147US5410547AVideo controller IC with built-in test circuit and method of testingCIRRUS LOGIC INC·Filed 1993·Granted Apr 25, 1995·27 cites·28 claims
- 0242US4837848AApparatus for selecting a reference line for image data compressionNETEXPRESS SYSTEMS INC·Filed 1987·Granted Jun 6, 1989·8 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →