Inventor

LIU YUFENG

CN40 patents

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

LIU YUFENG

LIU YUFENG

Large format tiled projection display screen with flexible surface film

Light control film and multi-layer optical film stack

Multilayer optical film

Isotropic layer of multilayer optical film comprising birefringent thermoplastic polymer

Front projection screen with high contrast

Dry erasable projection article and system

3M INNOVATIVE PROPERTIES CO

Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units

Method of modifying light with silicone (meth) acrylate copolymers

Method of modifying light with silicone (meth)acrylate copolymers

HONEYWELL INT INC

System and method for database augmented ground collision avoidance

System and method for communicating between a communications management system using ARINC 429 protocol and an internet protocol radio

Systems and methods for collaborative vehicle mission operations

BEIJING DAJIA INTERNET INFORMATION TECH CO LTD

Method and electronic device of gesture recognition

Posture detection method, apparatus and device, and storage medium

Method and device for detecting hand gesture key points

SHENZHEN GOODIX TECH CO LTD

Method for detecting pressure of active pen, device and active pen

Method for accessing code SRAM and electronic device

Touch detection chip and touch screen detection method

WEBER MICHAEL F

Display device and method of LC panel protection

Optical stack having birefringent layer of optically symmetrical crystallites

BEIJING QINGYING MACHINE VISUAL TECH CO LTD

Image acquisition apparatus based on miniature camera matrix

Image acquisition apparatus based on industrial digital camera matrix

JONES TODD D

Preformed malleable dental articles and methods

UNIV BEIJING

Non-evasive method and apparatus of detection of organism tissues

ROEHRIG MARK A

Method for manufacturing on a film substrate at a temperature above its glass transition

SHANGHAI UNITED IMAGING HEALTHCARE CO LTD

High-voltage device

BIERNATH ROLF W

Passive daylight-coupled backlight with turning film having prisms with chaos for sunlight viewable displays

XIAMEN BANDIAN ORIGINALITY TECH CO LTD

Night light

YU TA-HUA

Multilayer optical film layer comprising blend of methyl methacrylate polymer and styrene acrylonitrile polymer

UNIV JIANGNAN

Double enzyme tandem preparation method of l-2-aminobutyric acid

BONTAC BIO ENG SHENZHEN CO LTD

Method and enzyme for preparation of enzyme-modified stevia sugar and use of enzyme-modified stevia sugar

FRANK LOWELL C

Optical film laminates

NIU RAN

Electrochemical desalination system and method

UNIV HUAZHONG SCIENCE TECH

Gm-APD array lidar imaging method and system under strong background noise

CHIEN BERT T

Glare reducing glazing articles

CHONGQING BOE DISPLAY TECH CO LTD

Display panel having a touch structure and display apparatus

GM CRUISE HOLDINGS LLC

Autonomous vehicle simulated mileage data collection-guided operational design domain testing and test generation

CCCC CONSTRUCTION GROUP CO LTD

Prefabricated energy pile, construction method, and heat pump heat exchange system

UNIV MINNESOTA

Holder for a transesophageal echocardiography probe

CHINA TESTING & CERTIFICATION INT GROUP CO LTD

Coal consumption online measuring system