Inventor · disambiguated record
Derek F. Case
Also filed as: CASE DEREK F · RIDGWAY PETER C
5 granted patents·100 citations·filing 1974–1978
80Inventor score
Files withDATA RECORDING INSTR CO5
Top patents by PatentIndex Score
5 records- 0189US4223360AMagnetic recording transducersDATA RECORDING INSTR CO·Filed 1974·Granted Sep 16, 1980·53 cites·5 claims
- 0270US4170033AMulti-track head with shielding elements interconnected with low resistance conductive pathsDATA RECORDING INSTR CO·Filed 1978·Granted Oct 2, 1979·16 cites·6 claims
- 0358US4188247AManufacture of magnetic transducing headsDATA RECORDING INSTR CO·Filed 1978·Granted Feb 12, 1980·17 cites·10 claims
- 0441US4217168AMagnetic core formed from laminationsDATA RECORDING INSTR CO·Filed 1978·Granted Aug 12, 1980·14 cites·6 claims
- 0526US4199382AMagnetic materialDATA RECORDING INSTR CO·Filed 1978·Granted Apr 22, 1980·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →