Inventor

CHANG MIN

KR49 patents

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

CHANG MIN

SHANGHAI ROYE ELECTRIC CO LTD

Gas density relay with online self-checking function, and checking method therefor

Maintenance-free gas density relay and cross-checking method therefor

Field detection device, system and method for achieving no maintenance of gas density relay

Electrical system with on-line sampling verification function and verification method thereof

Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor

Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof

Electrical system with on-line sampling verification function and verification method thereof

Contact signal acquisition circuit for on-site on-line check of gas density relay

Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor

High anti-vibration gas density monitor

BMC MEDICAL CO LTD

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

Systems and methods for delivering a respiratory gas

EXXON RESEARCH ENGINEERING CO

Combination gas disengaging downcomer-rejuvenation tube for in-situ slurry catalyst rejuvenation (LAW541)

Slurry hydrocarbon synthesis with external product filtration

Enhanced catalyst mixing in slurry bubble columns (OP-3723)

Throat and cone gas injector and gas distribution grid for slurry reactor (LAW646)

Slurry hydrocarbon synthesis with reduced catalyst attrition and deactivation

Slurry hydrocarbon synthesis process with multistage catalyst rejuvenation

Enhanced gas separation for bubble column draft tubes

Throat and cone gas injector and gas distribution grid for slurry reactor

EXXONMOBIL RES & ENG CO

Increased heat exchange in two or three phase slurry

Catalyst regeneration

Throat and cone gas injector and gas distribution grid for slurry reactor {CJB-0004}

Product filtration system for slurry reactors

Throat and cone gas injector and gas distribution grid for slurry reactor (CJB-0004)

YUJIN ROBOT CO LTD

Apparatus of controlling movement of mobile robot mounted with wide angle camera and method thereof

Cleaning robot having expanded cleaning territory

Cleaning robot having improved driving and cleaning ability

Apparatus and method for modularizing duplex system architecture of mobile robot

Apparatus and method for generating dynamic safety zone of mobile robot

SAMSUNG ELECTRONICS CO LTD

Multi type air conditioner and cooling and heating control method thereof

Air conditioner and control method to change an operating mode based on a duration of time determined based on an outdoor temperature

Server, heat pump system, and method of authenticating installation of heat pump system

Heat pump and flow path switching apparatus

GE INSPECTION TECHNOLOGIES LP

Display screen or portion thereof with graphical user interface

User interface

EXXONMOBIL CHEMICAL PATENTS INC

Process and reactor system for oxidizing cycloalkylbenzene

Gas distribution in oxidation reactions

CNPC ENG TECH RES & DEV CO LTD

Temperature-resistant calcium-resistant water-based drilling fluid for oil and gas reservoir protection and use thereof

CHANG MIN

Data transmission circuit

GLEESON JAMES W

Method for haze mitigation and filterability improvement for base stocks

LEE SUK HO

Multi-type air conditioner