Inventor · disambiguated record
Lizheng Zhang
Also filed as: ZHANG LIZHENG
35 granted patents·2 pending applications·203 citations·filing 2005–2024
96Inventor score
Files withHALLIBURTON ENERGY SERVICES INC21ZHANG LIZHENG6WISCONSIN ALUMNI RES FOUND2ZHANG WEI2ZHENGXINYUAN TECH HANGZHOU CO LTD2
Top patents by PatentIndex Score
37 records- 0195US11396774B2Steering actuation mechanismHALLIBURTON ENERGY SERVICES INC·Filed 2020·Granted Jul 26, 2022·5 cites·20 claims
- 0292US7761826B1Method and system for crosstalk analysisCADENCE DESIGN SYSTEMS INC·Filed 2007·Granted Jul 20, 2010·65 cites·20 claims
- 0391US12247485B2Rotary steerable system with multiple rows of actuatorsHALLIBURTON ENERGY SERVICES INC·Filed 2023·Granted Mar 11, 2025·2 cites·20 claims
- 0490US8086978B2Method and system for performing statistical leakage characterization, analysis, and modelingZHANG LIZHENG·Filed 2008·Granted Dec 27, 2011·32 cites·36 claims
- 0590US7492449B2Inspection systems and methodsGEORGIA TECH RES INST·Filed 2005·Granted Feb 17, 2009·19 cites·22 claims
- 0689US11988050B2Centralizer with opposing hollow spring structureHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted May 21, 2024·1 cites·20 claims
- 0789US11933115B2Centralizer with opposing projectionsHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Mar 19, 2024·1 cites·19 claims
- 0889US11873687B2Centralizer with elongated rodsHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Jan 16, 2024·1 cites·20 claims
- 0989US11873688B2Centralizer with opposing hollow spring structureHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Jan 16, 2024·1 cites·18 claims
- 1087US10317351B2Pressurized NMR core analyzerHALLIBURTON ENERGY SERVICES INC·Filed 2016·Granted Jun 11, 2019·7 cites·20 claims
- 1186US12031433B2Steering valve for deactivating a steering pad of a rotary steerable systemHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Jul 9, 2024·1 cites·20 claims
- 1284US11933116B2Eccentric centralizerHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Mar 19, 2024·1 cites·20 claims
- 1383US7689954B2Efficient statistical timing analysis of circuitsWISCONSIN ALUMNI RES FOUND·Filed 2006·Granted Mar 30, 2010·17 cites·20 claims
- 1483US7212946B1Method, system, and program product for accommodating spatially-correlated variation in a process parameterIBM·Filed 2005·Granted May 1, 2007·13 cites·17 claims
- 1580US11634982B2Filtering of RSS pad noise in mud pulse telemetry systems and detection of RSS pad leaksHALLIBURTON ENERGY SERVICES INC·Filed 2021·Granted Apr 25, 2023·2 cites·14 claims
- 1679US7350171B2Efficient statistical timing analysis of circuitsZHANG LIZHENG·Filed 2005·Granted Mar 25, 2008·13 cites·28 claims
- 1776US12331640B2Steering valve for deactivating a steering pad of a rotary steerable systemHALLIBURTON ENERGY SERVICES INC·Filed 2024·Granted Jun 17, 2025·0 cites·20 claims
- 1876US8244491B1Statistical static timing analysis of signal with crosstalk induced delay change in integrated circuitZHANG LIZHENG·Filed 2008·Granted Aug 14, 2012·8 cites·19 claims
- 1974US10012077B2Downhole sensor for formation fluid property measurementHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Jul 3, 2018·4 cites·20 claims
- 2067US12326083B1Secondary steering pad retention mechanismHALLIBURTON ENERGY SERVICES INC·Filed 2024·Granted Jun 10, 2025·0 cites·20 claims
- 2166US8069432B2Method and system for performing statistical leakage characterization, analysis, and modelingZHANG LIZHENG·Filed 2008·Granted Nov 29, 2011·4 cites·22 claims
- 2264US7793245B2Statistical iterative timing analysis of circuits having latches and/or feedback loopsWISCONSIN ALUMNI RES FOUND·Filed 2007·Granted Sep 7, 2010·3 cites·15 claims
- 2360US10605052B2Thermal management system for downhole toolsHALLIBURTON ENERGY SERVICES INC·Filed 2015·Granted Mar 31, 2020·1 cites·10 claims
- 2460US8341569B2Statistical iterative timing analysis of circuits having latches and/or feedback loopsZHANG LIZHENG·Filed 2010·Granted Dec 25, 2012·1 cites·5 claims
- 2558US12180833B1Rotary steerable system steering pad actuator for wellbore drillingHALLIBURTON ENERGY SERVICES INC·Filed 2023·Granted Dec 31, 2024·0 cites·20 claims
- 2657US12116893B2Shear pin for deactivating a steering pad of a rotary steerable systemHALLIBURTON ENERGY SERVICES INC·Filed 2022·Granted Oct 15, 2024·0 cites·20 claims
- 2757US9732611B2Method and apparatus for formation testing and sampling when performing subterranean operationsZHANG LIZHENG·Filed 2012·Granted Aug 15, 2017·1 cites·20 claims
- 2852US11753871B2Rotary steerable system for wellbore drillingHALLIBURTON ENERGY SERVICES INC·Filed 2021·Granted Sep 12, 2023·0 cites·20 claims
- 2950US10927629B2Downhole machining toolHALLIBURTON ENERGY SERVICES INC·Filed 2016·Granted Feb 23, 2021·0 cites·20 claims
- 3050US9557300B2Wireline cable fatigue monitoring using thermally-induced acoustic wavesHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Jan 31, 2017·0 cites·42 claims
- 3148US10209390B2Measuring fluid conductivityZHANG WEI·Filed 2013·Granted Feb 19, 2019·0 cites·10 claims
- 3247US10428648B2Downhole formation fluid viscometer sensorHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Oct 1, 2019·0 cites·16 claims
- 3347US9575199B2Downhole fluid resistivity sensor systems and methodsZHANG WEI·Filed 2012·Granted Feb 21, 2017·0 cites·19 claims
- 3447US2025053723A1Method and apparatus for whole-process placement and routing incremental optimization, and computer deviceZHENGXINYUAN TECH HANGZHOU CO LTD·Filed 2023·Application pending·0 cites
- 3544US11773718B2Formation fluid sampling methods and systemsHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Oct 3, 2023·0 cites·11 claims
- 3644US2024143879A1Timing optimization method and apparatus based on output transition constraints, and computer deviceZHENGXINYUAN TECH HANGZHOU CO LTD·Filed 2022·Application pending·0 cites
- 3739US9388687B2Formation environment sampling apparatus, systems, and methodsDIRKSEN RONALD JOHANNES·Filed 2012·Granted Jul 12, 2016·0 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →