Inventor · disambiguated record
Francis H. Hilbert
Also filed as: HILBERT FRANCIS H · PARKER NORMAN W
12 granted patents·171 citations·filing 1975–1981
92Inventor score
Top patents by PatentIndex Score
12 records- 0187US4051532AAuxiliary signal processing circuit for television receiversMATSUSHITA ELECTRIC COMPANY OF·Filed 1975·Granted Sep 27, 1977·42 cites·8 claims
- 0270US4159398AStereo presence signal for an AM stereo systemMOTOROLA INC·Filed 1977·Granted Jun 26, 1979·18 cites·10 claims
- 0366US4377728APhase locked loop with improved lock-inMOTOROLA INC·Filed 1981·Granted Mar 22, 1983·18 cites·12 claims
- 0466US4218586ACompatible AM stereo broadcast systemMOTOROLA INC·Filed 1979·Granted Aug 19, 1980·15 cites·38 claims
- 0566US4192968AReceiver for compatible AM stereo signalsMOTOROLA INC·Filed 1977·Granted Mar 11, 1980·15 cites·15 claims
- 0661US4338491ACompatible AM stereophonic systemMOTOROLA INC·Filed 1980·Granted Jul 6, 1982·15 cites·9 claims
- 0758US4172966AAM stereophonic receiverMOTOROLA INC·Filed 1978·Granted Oct 30, 1979·11 cites·13 claims
- 0853US4159396AAM stereo receiver having signal-controlled correctorMOTOROLA INC·Filed 1977·Granted Jun 26, 1979·9 cites·5 claims
- 0950US4164623AAM stereo receiver with improved correction signalsMOTOROLA INC·Filed 1977·Granted Aug 14, 1979·8 cites·7 claims
- 1045US4170716AAM stereo receiver with correction limitingMOTOROLA INC·Filed 1977·Granted Oct 9, 1979·6 cites·6 claims
- 1143US4371747AAM Stereophonic decoderMOTOROLA INC·Filed 1980·Granted Feb 1, 1983·9 cites·7 claims
- 1238US4406922AStereo broadcast systemMOTOROLA INC·Filed 1981·Granted Sep 27, 1983·5 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →