Wentong Liu

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Determination of operation mode for AC asynchronous three-phrase mo...
- Patent number 11,764,716
- Issue date Sep 19, 2023
- Otis Elevator Company
- Lifei Cheng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS AND METHOD FOR CONTROLLING AN ESCALATOR SYSTEM OR AN AUTO...
- Publication number 20240253951
- Publication date Aug 1, 2024
- Otis Elevator Company
- Wentong Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DETERMINATION OF OPERATION MODE FOR AC ASYNCHRONOUS THREE-PHRASE MO...
- Publication number 20230318502
- Publication date Oct 5, 2023
- Otis Elevator Company
- Lifei Cheng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER