Yifan Chen

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Loaded-to-frame detection equipment and method for backfill groutin...
- Patent number 11,181,633
- Issue date Nov 23, 2021
- Tongji University
- Xiongyao Xie
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Loaded-To-Frame Detection Equipment for Backfill Grouting of Shield...
- Publication number 20190330984
- Publication date Oct 31, 2019
- Tongji University
- Xiongyao XIE
- E21 - EARTH DRILLING MINING
Information Patent Application
DUAL DISPLAY COMPUTING DEVICE
- Publication number 20140035794
- Publication date Feb 6, 2014
- Google Inc.
- Yifan Chen
- G06 - COMPUTING CALCULATING COUNTING