Inventor

LIU JIANFENG

CN91 patents

⚠️ This page may combine multiple inventors who share the name “LIU JIANFENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU JIANFENG

UNIV SICHUAN

Device with position-limit spring for alternating tension-compression cyclic test

Rock sample fixing device with three-jaw chuck for cyclic tension and compression test

Shear testing system of thermo-seepage-mechanical field and engineering disturbance coupling under deep and complex condition

Fixing device for acoustic emission test sensors for rock damage testing

Rock testing device with three-jaw chuck for direct tensile test

Fixing device for acoustic emission test sensors for rock damage testing

Adjustable fixing device for acoustic emission test sensors for rock damage testing

Rock fixing device with hydraulic-spring combination and position-limiting chuck for direct tensile test

Hydraulic and spring combination device with position-limit spring for rock sample

Microseismic monitoring system

Position-limit device with spring components for direct tensile test

Pneumatic fracturing method and system for exploiting shale gas

Rock mechanics experiment system for simulating deep-underground environment

Spring supported lower clamper for direct tensile test

Test system for microseismic test of rock mass fractures

Acoustic emission test equipment and analysis technology for rock breaking

SHANGHAI UNITED IMAGING HEALTHCARE CO LTD

Radiation therapy system and method

Systems and methods for ramping down magnetic resonance magnet

Systems and methods for ramping down magnetic resonance magnet

Therapeutic system and method

Radiation therapy system and method

Systems and methods for ramping down magnetic resonance magnet

Radiation therapy system and method

Therapeutic system and method

Therapeutic system and method

Superconducting magnet

Displacer in magnetic resonance imaging system

Superconducting magnet

Displacer in magnetic resonance imaging system

Systems and methods for magnetic resonance imaging

LIU JIANFENG

Universal multipurpose sensor fixing device

Multipurpose sensor fixing device

Acoustic emission test sensor fixing device

Universal acoustic emission test sensor fixing device

UNIV MICHIGAN REGENTS

Compositions and methods for blocking ultraviolet radiation

Compositions and methods for blocking ultraviolet radiation

Compositions and methods for blocking ultraviolet radiation

AGERE SYSTEMS INC

Echo canceller and method of echo cancellation using an NLMS algorithm

BILLIONAIRE LIGHTING CO LTD

Floor standing light

PETRO KING ENERGY TECH HUIZHOU CO LTD

Large-diameter soluble bridge plug

CITIC DICASTAL CO LTD

Wheel transfer device

SAMSUNG ELECTRONICS CO LTD

Reconfigurable ECC for memory

HUAWEI TECH CO LTD

Image management method and apparatus

ALCATEL LUCENT USA INC

Echo cancellation in a communication network

CHANG XIANGQING

Preventing roaming user terminal re-authentication

FREMONT MICRO DEVICES CORP

Soft-start circuit for power-up

ZHONGSHAN SMARTEK SECURITY TECH CO LTD

Lock box

BOE TECHNOLOGY GROUP CO LTD

Tank for substrate cleaning, tank heating apparatus, tank heating method, and substrate cleaning apparatus

BEIJING ZITIAO NETWORK TECHNOLOGY CO LTD

Method for sending gift in live streaming room, method for displaying gift in live streaming room, and related device

XU WENHUA

Method, apparatus and system for processing composite service and replacing service and invoking service