Inventor · disambiguated record
Drey Johnson
Also filed as: JOHNSON DREY
4 granted patents·8 citations·filing 1990–1990
66Inventor score
Technology areasG11B
Files withCONCEPT DESIGN4
Top patents by PatentIndex Score
4 records- 0131US5150847ACassette loader with leader tape extraction and transfer, and methodCONCEPT DESIGN·Filed 1990·Granted Sep 29, 1992·3 cites·11 claims
- 0229US5150849ACassette loader with improved leader tape extraction and methodCONCEPT DESIGN·Filed 1990·Granted Sep 29, 1992·3 cites·4 claims
- 0325US5181667ACassette loader with precision cassette extraction and winding reference positioning means and methodCONCEPT DESIGN·Filed 1990·Granted Jan 26, 1993·1 cites·13 claims
- 0423US5181669ACassette loader with simultaneous leader tape equalization and loadingCONCEPT DESIGN·Filed 1990·Granted Jan 26, 1993·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →