Inventor · disambiguated record
David Fisher
Also filed as: FISHER DAVID · FISHER DAVID A · FISHER DAVID ANTHONY · FISHER DAVID L JR
57 granted patents·11 pending applications·3,949 citations·filing 1969–2022
99Inventor score
Files with3COM CORP12NORTEL NETWORKS LTD6PLASTIC LOGIC LTD6NORTHERN TELECOM LTD5R2 SEMICONDUCTOR INC5
Top patents by PatentIndex Score
68 records- 0198US6496105B2Power transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 2001·Granted Dec 17, 2002·191 cites·21 claims
- 0298US6140911APower transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 1999·Granted Oct 31, 2000·534 cites·10 claims
- 0398US5994998APower transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 1997·Granted Nov 30, 1999·723 cites·32 claims
- 0497US6329906B1Power transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 2000·Granted Dec 11, 2001·115 cites·26 claims
- 0596US9069365B2DC-DC converter enabling rapid output voltage changesR2 SEMICONDUCTOR INC·Filed 2013·Granted Jun 30, 2015·71 cites·15 claims
- 0696US6753761B2Power transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 2002·Granted Jun 22, 2004·62 cites·10 claims
- 0796US6710704B2Power transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 2002·Granted Mar 23, 2004·67 cites·11 claims
- 0896US6208629B1Method and apparatus for assigning spectrum of a local area network3COM CORP·Filed 1999·Granted Mar 27, 2001·452 cites·4 claims
- 0995US8593128B2Stacked NMOS DC-to-DC power conversionBURNS LAWRENCE M·Filed 2012·Granted Nov 26, 2013·24 cites·18 claims
- 1095US5933420AMethod and apparatus for assigning spectrum of a wireless local area network3COM CORP·Filed 1996·Granted Aug 3, 1999·303 cites·15 claims
- 1194US9716433B2Control of conversion ratios of a power source block and a bidirectional active filterR2 SEMICONDUCTOR INC·Filed 2015·Granted Jul 25, 2017·15 cites·18 claims
- 1294USD603398SElectronic document readerPLASTIC LOGIC LTD·Filed 2009·Granted Nov 3, 2009·60 cites·1 claims
- 1392US8212536B2Stacked NMOS DC-to-DC power conversionBURNS LAWRENCE M·Filed 2009·Granted Jul 3, 2012·20 cites·26 claims
- 1490US7920320B2Electronic reading devicesPLASTIC LOGIC LTD·Filed 2008·Granted Apr 5, 2011·42 cites·29 claims
- 1590US6075628AFault location in optical communication systemsNORTEL NETWORKS CORP·Filed 1995·Granted Jun 13, 2000·114 cites·20 claims
- 1687US9991782B2Control of conversion ratios of a power source block and bidirectional active filterR2 SEMICONDUCTOR INC·Filed 2017·Granted Jun 5, 2018·5 cites·20 claims
- 1786US6989735B2Power transfer apparatus for concurrently transmitting data and power over data wires3COM CORP·Filed 2004·Granted Jan 24, 2006·19 cites·18 claims
- 1885US4910750AData transmission systemSTC PLC·Filed 1988·Granted Mar 20, 1990·79 cites·14 claims
- 1984US6229788B1Method and apparatus for traffic shaping in a broadband fiber-based access systemNORTEL NETWORKS LTD·Filed 1998·Granted May 8, 2001·165 cites·38 claims
- 2083US8362649B2Multi-use voltage regulatorR2 SEMICONDUCTOR INC·Filed 2010·Granted Jan 29, 2013·10 cites·20 claims
- 2183US7005969B2Power transfer apparatus for concurrently transmitting data and power over data wiresFISHER DAVID A·Filed 2004·Granted Feb 28, 2006·18 cites·17 claims
- 2282US4539675AEcho cancellerINT STANDARD ELECTRIC CORP·Filed 1982·Granted Sep 3, 1985·52 cites·13 claims
- 2382US3983539APolymorphic programmable units employing plural levels of sub-instruction setsBURROUGHS CORP·Filed 1975·Granted Sep 28, 1976·49 cites·32 claims
- 2481US4558411APolymorphic programmable units employing plural levels of sub-instruction setsBURROUGHS CORP·Filed 1969·Granted Dec 10, 1985·23 cites·1 claims
- 2580US4878232AData transmission systemSTC PLC·Filed 1986·Granted Oct 31, 1989·53 cites·16 claims
- 2679US5657326ARadio based collision detection for wireless communication system3COM CORP·Filed 1994·Granted Aug 12, 1997·112 cites·36 claims
- 2778US4766589AData transmission systemSTC PLC·Filed 1985·Granted Aug 23, 1988·53 cites·6 claims
- 2877US5237593ASequence synchronisationSTC PLC·Filed 1990·Granted Aug 17, 1993·93 cites·28 claims
- 2977US3983541APolymorphic programmable units employing plural levels of phased sub-instruction setsBURROUGHS CORP·Filed 1975·Granted Sep 28, 1976·39 cites·13 claims
- 3076US6307852B1Rotator switch data path structuresNORTEL NETWORKS LTD·Filed 1998·Granted Oct 23, 2001·46 cites·4 claims
- 3174USD622273SElectronic document readerPLASTIC LOGIC LTD·Filed 2009·Granted Aug 24, 2010·17 cites·1 claims
- 3274US5321754ASequence synchronizationNORTHERN TELECOM LTD·Filed 1991·Granted Jun 14, 1994·79 cites·14 claims
- 3373US7009964B2Rotator switch data path structuresNORTEL NETWORKS LTD·Filed 2001·Granted Mar 7, 2006·10 cites·19 claims
- 3472US11835449B2Generating signatures based on sensing gas concentration conditionsSPARROW DETECT INC·Filed 2021·Granted Dec 5, 2023·0 cites·27 claims
- 3572USD585888SElectronic document readerPLASTIC LOGIC LTD·Filed 2007·Granted Feb 3, 2009·15 cites·1 claims
- 3671US10884719B2Dynamic model reflectionSYNCHRONY BANK·Filed 2017·Granted Jan 5, 2021·1 cites·18 claims
- 3770US8773200B2Decoupling circuits for filtering a voltage supply of multiple power amplifiersR2 SEMICONDUCTOR INC·Filed 2012·Granted Jul 8, 2014·3 cites·18 claims
- 3870US6751272B1Dynamic adjustment to preserve signal-to-noise ratio in a quadrature detector system3COM CORP·Filed 1998·Granted Jun 15, 2004·30 cites·36 claims
- 3969US8233250B2Over voltage protection of switching converterBURNS LAWRENCE M·Filed 2009·Granted Jul 31, 2012·7 cites·31 claims
- 4067US10976248B2Tunable light source cavity detection using a plurality of axial-plus-transverse modesSPARROW DETECT INC·Filed 2020·Granted Apr 13, 2021·0 cites·20 claims
- 4167US5294977ATelevision signal detection apparatusFISHER DAVID·Filed 1990·Granted Mar 15, 1994·31 cites·6 claims
- 4266US8634171B2Over voltage protection of a switching converterBURNS LAWRENCE M·Filed 2012·Granted Jan 21, 2014·2 cites·11 claims
- 4364US11022544B2Generating signatures based on sensing gas concentration conditionsSPARROW DETECT INC·Filed 2020·Granted Jun 1, 2021·0 cites·21 claims
- 4462USD606993SElectronic document readerPLASTIC LOGIC LTD·Filed 2007·Granted Dec 29, 2009·11 cites·1 claims
- 4559US11828705B2Apparatus and method for spectroscopically detecting a sampleSPARROW DETECT INC·Filed 2022·Granted Nov 28, 2023·0 cites·16 claims
- 4659US2021149649A1Dynamic model reflectionSYNCHRONY BANK·Filed 2020·Application pending·0 cites
- 4758US10724946B2Tunable light source cavity detection using a plurality of axial-plus-transverse modesSPARROW DETECT INC·Filed 2018·Granted Jul 28, 2020·0 cites·27 claims
- 4858US5191330ABinary for penternary (five-level) encoding systemNORTHERN TELECOM LTD·Filed 1991·Granted Mar 2, 1993·42 cites·9 claims
- 4957US2002158122A1Method and system to interpret and manage different smart card data architecturesFiled 2002·Application pending·0 cites
- 5057US2003208403A1Merchant configurable loyalty systemFiled 2003·Application pending·0 cites
Showing the top 50 of 68 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →