Patents/Inventors

Chunmei Zhang

BaodingCN20 patents

14 Patents

USD11253352026
Projector Stands
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD11241012026
Projection Screen
Shenzhen Le Jia Da Science And Technology Co., Ltd.
0 cites
US126061812026
Method and Apparatus for Predicting Average Energy Consumption of an Electric Vehicle
Great Wall Motor Company Limited
0 cites
US125096212025
Method for Preparing Heat-conductive Cement Slurry for Well Cementation
YAO BAI SPECIAL CEMENT TECHNOLOGY RESEARCH AND DEVELOPMENT CO., Ltd.
0 cites
USD10797892025
Projection Screen
Shenzhen Le Jia Da Science And Technology Co., Ltd.
0 cites
USD10689102025
Projector Stand
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD10673082025
Projector Screen
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD10604792025
Projection Screen
Shenzhen Le Jia Da Science And Technology Co., Ltd.
0 cites
USD10347662024
Projection Screen
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD10280642024
Projection Screen with Stand
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD10157522024
Portable Support Curtain
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
USD10154072024
Projection Screen
SHENZHEN LE JIA DA SCIENCE AND TECHNOLOGY CO., Ltd.
0 cites
US117868802023
Preparation Method of the Microcapsules for Low-temperature Well Cementation to Be Used to Control Cement Hydration Heat
YAO BAI SPECIAL CEMENT TECHNOLOGY RESEARCH AND DEVELOPMENT CO., Ltd.
0 cites
US116034882023
Process for Preparing Metal-chelate Retarder by Sol-gel Method
CNPC BOHAI DRILLING ENGINEERING COMPANY LIMITED
0 cites