Inventor · disambiguated record
Fred D. Johnson
Also filed as: JOHNSON FRED · JOHNSON FRED D
7 granted patents·89 citations·filing 1980–2008
85Inventor score
Top patents by PatentIndex Score
7 records- 0187US4446443AAmplifier having reduced power dissipation and improved slew rateZENITH RADIO CORP·Filed 1982·Granted May 1, 1984·32 cites·12 claims
- 0274US4370674AStabilization network for a cathode ray tubeZENITH RADIO CORP·Filed 1981·Granted Jan 25, 1983·23 cites·12 claims
- 0363US4390817AIntegratable CRT spot cut-off networkZENITH RADIO CORP·Filed 1981·Granted Jun 28, 1983·16 cites·4 claims
- 0459US8720445B2Tracheal tube with colorimetric CO2 indicatorCAIN BRIAN·Filed 2008·Granted May 13, 2014·8 cites·28 claims
- 0540US4347528AG2 Set-up circuit for a television receiverZENITH RADIO CORP·Filed 1981·Granted Aug 31, 1982·6 cites·4 claims
- 0630US4825294AAnti-flaring video output amplifier circuit and techniqueZENITH ELECTRONICS CORP·Filed 1987·Granted Apr 25, 1989·2 cites·10 claims
- 0729US4309718AService switch arrangement for low level matrixing type television receiverZENITH RADIO CORP·Filed 1980·Granted Jan 5, 1982·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →