Inventor · disambiguated record
John Gammel
Also filed as: GAMMEL JOHN · GAMMEL JOHN C · GAMMEL JOHN CHRISTOPHER
18 granted patents·248 citations·filing 1982–2015
93Inventor score
Top patents by PatentIndex Score
18 records- 0183US9954430B2Overvoltage and surge protection in a power over ethernet deviceSILICON LAB INC·Filed 2015·Granted Apr 24, 2018·5 cites·20 claims
- 0283US5881129ASelf-monitoring line interface circuitFiled 1996·Granted Mar 9, 1999·107 cites·34 claims
- 0380US8412961B2Circuit and method for detecting a legacy powered device in a power over Ethernet systemGAMMEL JOHN CHRISTOPHER·Filed 2010·Granted Apr 2, 2013·17 cites·20 claims
- 0478US9696272B2Systems and methods for humidity measurement using dielectric material-based relative humidity sensorsSILICON LAB INC·Filed 2015·Granted Jul 4, 2017·3 cites·25 claims
- 0573US6657496B2Amplifier circuit with regenerative biasingLEGERITY INC·Filed 2001·Granted Dec 2, 2003·19 cites·24 claims
- 0671US10153909B2Power over ethernet powered device configured for low duty-cycle operationSILICON LAB INC·Filed 2015·Granted Dec 11, 2018·2 cites·12 claims
- 0770US8754542B2Apparatus including a gate drive circuit for selectively providing power to a powered device through multiple wire pairsGAMMEL JOHN·Filed 2011·Granted Jun 17, 2014·6 cites·20 claims
- 0866US7715165B2System and method of surge protection in a powered deviceSILICON LAB INC·Filed 2006·Granted May 11, 2010·3 cites·13 claims
- 0963US5854839ADual voltage, self-monitoring line circuitLUCENT TECHNOLOGIES INC·Filed 1996·Granted Dec 29, 1998·38 cites·10 claims
- 1062US8716886B2Circuit device and method of current limit-based disconnect detectionLANDRY D MATTHEW·Filed 2008·Granted May 6, 2014·2 cites·21 claims
- 1159US9927779B2Power sourcing equipment and method of detecting inrush fault errorsGAMMEL JOHN C·Filed 2012·Granted Mar 27, 2018·1 cites·20 claims
- 1258US6842518B2Frequency-dependent impedance synthesis for DSL interface circuitsLEGERITY INC·Filed 2001·Granted Jan 11, 2005·3 cites·22 claims
- 1351US6925178B2Returning ringing signals through the tip amplifier of subscriber-line interface circuitryLEGERITY INC·Filed 2003·Granted Aug 2, 2005·1 cites·28 claims
- 1450US5848149ASubscriber line interface and power circuitLUCENT TECHNOLOGIES INC·Filed 1995·Granted Dec 8, 1998·22 cites·9 claims
- 1546US6940969B2Capacitor cancellation method and apparatusLEGERITY INC·Filed 2001·Granted Sep 6, 2005·0 cites·29 claims
- 1645US5974363ASelf-testing of smart line cardsLUCENT TECHNOLOGIES INC·Filed 1997·Granted Oct 26, 1999·19 cites·30 claims
- 1738US7855669B2Circuit device to generate a high precision control signalSILICON LAB INC·Filed 2008·Granted Dec 21, 2010·0 cites·18 claims
- 1829US4573065ARadial high voltage switch structureAT & T BELL LAB·Filed 1982·Granted Feb 25, 1986·0 cites·15 claims
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