Inventor · disambiguated record
Michael J. Underhill
Also filed as: UNDERHILL MICHAEL J · UNDERHILL MICHAEL JAMES · UNDERHILL MICHAEL TULLY
17 granted patents·2 pending applications·229 citations·filing 1975–2005
94Inventor score
Top patents by PatentIndex Score
19 records- 0182US4020422APhase and/or frequency comparatorsPHILIPS CORP·Filed 1975·Granted Apr 26, 1977·30 cites·8 claims
- 0280US4024464AFrequency synthesizer of the phase lock loop typePHILIPS CORP·Filed 1975·Granted May 17, 1977·27 cites·5 claims
- 0372US6417707B1Noise reduction circuitsTORIC LTD·Filed 1998·Granted Jul 9, 2002·28 cites·39 claims
- 0470US4746870AWide range frequency synthesizer with reduced jitterPHILIPS CORP·Filed 1987·Granted May 24, 1988·23 cites·15 claims
- 0570US4380743AFrequency synthesizer of the phase lock loop typePHILIPS CORP·Filed 1981·Granted Apr 19, 1983·23 cites·8 claims
- 0668US4536718AJitter reduction circuit for frequency synthesizerPHILIPS CORP·Filed 1983·Granted Aug 20, 1985·20 cites·10 claims
- 0755US4253071APhase modulator circuitPHILIPS CORP·Filed 1979·Granted Feb 24, 1981·7 cites·7 claims
- 0852US4410855AElectronic analog switching devicePHILIPS CORP·Filed 1981·Granted Oct 18, 1983·12 cites·2 claims
- 0951US4283794AMeasuring radio-frequency impedancePHILIPS CORP·Filed 1979·Granted Aug 11, 1981·9 cites·8 claims
- 1050US4068181ADigital phase comparatorPHILIPS CORP·Filed 1976·Granted Jan 10, 1978·9 cites·5 claims
- 1147US4365201AFrequency synthesizerPHILIPS CORP·Filed 1980·Granted Dec 21, 1982·8 cites·4 claims
- 1246US4503405AFrequency modulation using a phase modulatorPHILIPS CORP·Filed 1983·Granted Mar 5, 1985·9 cites·16 claims
- 1345US6275101B1Phase noise reduction circuitsUNIV SURREY·Filed 1997·Granted Aug 14, 2001·8 cites·24 claims
- 1444US2005009868A1Retinoid receptor pan-antagonists for stimulating chondrogenesisFiled 2002·Application pending·0 cites
- 1542US4184122ADigital phase comparison apparatusPHILIPS CORP·Filed 1978·Granted Jan 15, 1980·6 cites·6 claims
- 1636US4602219AJitter reduction circuit for frequency synthesizerPHILIPS CORP·Filed 1985·Granted Jul 22, 1986·5 cites·19 claims
- 1735US2008315943A1Anti-Jitter CircuitsUNDERHILL MICHAEL JAMES·Filed 2005·Application pending·0 cites
- 1833US4463308AR.F. Impedance determinationPHILIPS CORP·Filed 1981·Granted Jul 31, 1984·3 cites·12 claims
- 1930US6791393B1Anti-jitter circuitsTORIC LTD·Filed 1999·Granted Sep 14, 2004·2 cites·28 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →