Inventor · disambiguated record
Ralph Reginald Pearce
Also filed as: PEARCE RALPH R · PEARCE RALPH REGINALD
5 granted patents·183 citations·filing 1974–1978
84Inventor score
Files withEMI LTD5
Top patents by PatentIndex Score
5 records- 0192US4081132ACredit cards and other security documentsEMI LTD·Filed 1974·Granted Mar 28, 1978·50 cites·10 claims
- 0290US3998160AMagnetic ink printing methodEMI LTD·Filed 1975·Granted Dec 21, 1976·67 cites·13 claims
- 0385US4186944ASecurity documentEMI LTD·Filed 1978·Granted Feb 5, 1980·38 cites·6 claims
- 0475US4104513AMagnetic recordingEMI LTD·Filed 1975·Granted Aug 1, 1978·18 cites·2 claims
- 0551US4197989AMagnetic recordingEMI LTD·Filed 1978·Granted Apr 15, 1980·10 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →