Inventor

Feng Liang

Inventor

Cypress, TX, US

Overview

1994–2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 132 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere22%

H02KDynamo-electric machines17%

E21BEarth or rock drilling15%

Y02TClimate change mitigation technologies related to transportation5%

F01LCyclically operating valves for machines or engines5%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%

B60LPropulsion of electrically-propelled vehicles3%

H01FMagnets3%

C04BLime, magnesia2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

10,879,777Rapid stress relief annealing of a stator2020 10,879,775Surface treatments of electrical steel core devices2020 10,865,342Enhanced high temperature crosslinked fracturing fluids2020 10,797,544Rotor for shaping airgap flux density2020 10,760,395Conditioning a subterranean formation2020 10,749,391Electric machine rotor2020 10,738,236High temperature fracturing fluids with nano-crosslinkers2020 10,734,848Fixtures and methods for forming aligned magnetic cores2020 10,707,713Balanced hairpin winding electric machine2020 10,696,892Enhancements of gelled hydrocarbon systems2020 10,669,829Using electromagnetic waves to remove near wellbore damages in a hydrocarbon reservoir2020 10,669,472Additives to minimize viscosity reduction for guar/borate system under high pressure2020 10,647,909Hydraulic fracturing fluid2020 10,640,700High temperature crosslinked fracturing fluids2020 10,633,954Mitigation of sand production in sandstone reservoir using thermally expandable beads2020 10,619,090Fracturing fluid compositions having Portland cement clinker and methods of use2020 10,608,487Electric machine rotor2020 10,563,119Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency2020 10,550,314High temperature fracturing fluids with nanoparticles2020 10,544,347Fracturing fluids comprising alkanolamine borates as crosslinkers for polysaccharides2020 10,541,577Utilization of magnetic fields in electric machines having skewed rotor sections and separators with cutouts2020 10,518,624Motor having non-rectangular rotor magnets2019 10,508,230High temperature fracturing fluids with nano-crosslinkers2019 10,505,416Patterned offset pole rotor2019 10,501,680Treating seawater for hydrocarbon production2019 10,457,850Reduced corrosion iron sulfide scale removing fluids2019 10,442,983Mitigation of condensate banking using surface modification2019 10,432,047Asymmetrical surface groove patterns for permanent magnet machine rotors2019 10,432,043Slotted rotor-bridge for electrical machines2019 10,415,358Conditioning a subterranean formation2019 10,407,606High temperature viscoelastic surfactant (VES) fluids comprising nanoparticle viscosity modifiers2019 10,390,673Cleaning robot2019 10,355,537Method for adjusting magnetic permeability of electrical steel2019 10,336,933Vulcanized oil and water swellable particulate composite compositions2019 10,337,410Analysis method for measurement error of operating parameters of gas turbine and control apparatus2019 10,329,475High temperature fracturing fluids with nano-crosslinkers2019 10,294,408Low-toxicity, polymerizable aqueous consolidation compositions for use in subterranean formation consolidation treatments2019 10,290,407Grain boundary diffusion process for rare-earth magnets2019 10,211,689Electric machine rotor2019 10,199,910Motor core formed from a single steel source and having separately processed rotor and stator laminations2019 10,144,866High temperature crosslinked fracturing fluids2018 10,131,833Self-suspending modified proppant system for carbon dioxide based fracturing fluids2018 10,131,832Self-suspending proppants for use in carbon dioxide-based fracturing fluids and methods of making and use thereof2018 10,132,120Elastomer-thermally conductive carbon fiber compositions for roller-cone drill bit seals2018 10,131,834Self-suspending modified proppant system for carbon dioxide based fracturing fluids2018 10,119,068Viscosifying modified proppant system for carbon dioxide based fracturing fluids2018 10,113,105Hydrophobizing agents comprising an oligomeric polyamine and methods for coating particulates therewith2018 10,106,733Viscosifying modified proppant system for carbon dioxide based fracturing fluids2018 10,066,155Viscosifying proppants for use in carbon dioxide-based fracturing fluids and methods of making and use thereof2018 10,047,279High temperature viscoelastic surfactant (VES) fluids comprising polymeric viscosity modifiers2018 9,985,484Surface groove patterns for permanent magnet machine rotors2018 9,926,483'Degradable balls for use in subterranean applications'2018 9,890,317'Solids-free diverting agents and methods related thereto'2018 9,890,322'Surface modification agent emulsions comprising hydrophobically modified amine-containing polymers for use in subterranean formations'2018 9,863,220'Hydrophobically modified amine-containing polymers for mitigating scale buildup'2018 9,862,876'Methods and compositions of treating subterranean formations with a novel resin system'2018 9,862,878'High temperature fracturing fluids with nano-crosslinkers'2018 9,822,295'Vulcanized oil and water swellable particulate composite compositions'2017 9,818,516'High temperature hybrid permanent magnet'2017 9,786,419'Grain boundary diffusion process for rare-earth magnets'2017 9,725,639'Wellbore servicing materials and methods of making and using same'2017 9,708,524'Polymerizable monomer compositions comprising monomers with high affinity for sand grain surfaces for sand consolidation applications'2017 9,695,352'Compositions for treating subterranean formations'2017 9,562,425'Methods of enhancing the conductivity of propped fractures with in-situ acidizing'2017 9,494,026'Methods and compositions of treating subterranean formations with a novel resin system'2016 9,441,152'Wellbore servicing compositions and methods of making and using same'2016 9,404,031'Compositions and methods for controlling particulate migration in a subterranean formation'2016 9,359,547'Wellbore servicing compositions and methods of making and using same'2016 9,321,954'Consolidation compositions for use in subterranean formation operations'2016 9,279,077'Methods of forming and placing proppant pillars into a subterranean formation'2016 9,260,935'Degradable balls for use in subterranean applications'2016 9,243,183'Methods of treating a subterranean formation with thermally activated suspending agents'2016 9,035,522'Permanent magnet machine with different pole arc angles'2015 8,936,086'Methods of fluid loss control, diversion, and sealing using deformable particulates'2015 8,887,816'Polymer compositions for use in downhole tools and components thereof'2014 8,720,555'Self-diverting high-rate water packs'2014 8,584,754'Delayed-tackifier coated particulates and methods relating thereto'2013 8,536,748'Permanent magnet machine with different pole arc angles'2013 8,461,739'Stator for an electric machine'2013 8,436,504'Stator for an electric machine'2013 8,408,303'Compositions for improving thermal conductivity of cement systems'2013 8,350,431'Permanent magnet machine'2013 8,120,223'Permanent magnet machine with offset pole spacing'2012 8,115,582'Inductor topologies with substantial common-mode and differential-mode inductance'2012 8,052,080'Rope breaking device'2011 8,044,546'Permanent magnet machine'2011 8,018,109'Permanent magnet machine with offset pole spacing'2011 7,979,171'Permanent magnet temperature estimation'2011 7,834,507'Electric machine winding arrangement'2010 7,791,236'Permanent magnet machine'2010 7,758,841'Reductive functionalization of carbon nanotubes'2010 7,740,070'Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same'2010 7,584,727'Permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine'2009 7,545,069'Electric machine winding arrangement'2009 7,530,396'Self repairing cement compositions and methods of using same'2009 7,451,906'Products for use in low temperature fluxless brazing'2008 7,426,911'Enhanced permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine'2008 7,249,579'Enhanced permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine'2007 7,124,720'Permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine'2006 7,000,823'Fluxless brazing'2006 6,990,486'Systems and methods for discovering fully dependent patterns'2006 6,933,692'Diagnostic method for an electric drive assembly'2005 6,913,184'Alloy composition and method for low temperature fluxless brazing'2005 6,867,524'Rotor skew methods for permanent magnet motors'2005 6,815,086'Methods for fluxless brazing'2004 6,763,789'Electromagnetic actuator with permanent magnet'2004 6,744,158'Electric machine with cooling rings'2004 6,683,435'Electrical machine drive method and system'2004 6,670,785'Electrical machine drive system and method'2003 6,603,226'Electric machine drive having sensorless control'2003 6,570,289'Low noise automotive alternator'2003 6,548,931'Hybrid permanent magnet/synchronous machines'2003 6,445,079'Method and apparatus for controlling an induction machine'2002 6,445,095'Electric machine with laminated cooling rings'2002 6,373,162'Permanent magnet electric machine with flux control'2002 6,359,366'Hybrid permanent magnet/synchronous machines'2002 6,359,800'Direct current electric power generation system with variable speed alternating current generators'2002 5,965,967'Rotor for an electrical machine'1999 5,825,112'Doubly salient motor with stationary permanent magnets'1998 5,793,167'Operation of a motor vehicle alternator'1998 5,765,513'Electromechanically actuated valve'1998 5,730,091'Soft landing electromechanically actuated engine valve'1998 5,692,463'Electromechanically actuated valve with multiple lifts'1997 5,672,925'Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings'1997 5,648,705'Motor vehicle alternator and methods of operation'1997 5,647,311'Electromechanically actuated valve with multiple lifts and soft landing'1997 5,645,019'Electromechanically actuated valve with soft landing and consistent seating force'1997 5,642,021'Method and system for controlling an alternator to optimize direct current output'1997 5,469,351'Fault isolation in an induction motor control system'1995 5,459,385'Variable reluctance drive system'1995 5,455,473'Field weakening for a doubly salient motor with stator permanent magnets'1995 5,376,851'Variable reluctance motor with full and short pitch windings'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2013Based in Canton, MI, US· patent location history

1997–2002Patents assigned to FORD GLOBAL TECH INC (12)· patent assignee history

2004–2020Patents assigned to FORD GLOBAL TECH LLC (37)· patent assignee history

2004–2008Based in Oakville, CA· patent location history

2010–2018Based in Houston, TX, US· patent location history

2011–2020Based in Troy, MI, US· patent location history

2012–2017Patents assigned to LIANG FENG (12)· patent assignee history

2014–2020Based in Cypress, TX, US· patent location history

2016–2019Patents assigned to HALLIBURTON ENERGY SERVICES INC (22)· patent assignee history

2018–2020Patents assigned to SAUDI ARABIAN OIL CO (26)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FORD GLOBAL TECH LLC	37	2004–2020
SAUDI ARABIAN OIL CO	26	2018–2020
HALLIBURTON ENERGY SERVICES INC	22	2016–2019
FORD GLOBAL TECH INC	12	1997–2002
LIANG FENGself	12	2012–2017

Locations

Location	Patents	Span
Cypress, Texas, US	47	2014–2020
Canton, MI, US	35	1995–2013
Troy, MI, US	26	2011–2020
Houston, Texas, US	8	2010–2018
Oakville, CA	4	2004–2008