Yumei Chen

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Ray calibration device and operating method thereof, and radiation...
- Patent number 10,809,207
- Issue date Oct 20, 2020
- Zhiqiang Chen
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Ray energy calibration device, ray energy calibration method and ra...
- Patent number 10,386,509
- Issue date Aug 20, 2019
- Nuctech Company Limited
- Yumei Chen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Display device with flexible circuit board extended to be interpose...
- Patent number 10,042,460
- Issue date Aug 7, 2018
- BOE Technology Group Co., Ltd.
- Guangquan Wang
- G02 - OPTICS
Information Patent Grant
Energy spectrum modulation apparatus, material discrimination metho...
- Patent number 7,702,075
- Issue date Apr 20, 2010
- Tsinghu University
- Xuewu Wang
- G01 - MEASURING TESTING
Information Patent Grant
High-voltage automatic changeover switch
- Patent number 7,679,012
- Issue date Mar 16, 2010
- Nuctech Company Limited
- Yaohong Liu
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
RAY COLLIMATION DEVICE AND RADIATION INSPECTION DEVICE
- Publication number 20240379258
- Publication date Nov 14, 2024
- Nuctech Company Limited
- Yaohong LIU
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
RAY ENERGY CALIBRATION DEVICE, RAY ENERGY CALIBRATION METHOD AND RA...
- Publication number 20190033475
- Publication date Jan 31, 2019
- Nuctech Company Limited
- Yumei Chen
- G01 - MEASURING TESTING
Information Patent Application
RAY CALIBRATION DEVICE AND OPERATING METHOD THEREOF, AND RADIATION...
- Publication number 20170184513
- Publication date Jun 29, 2017
- Nuctech Company Limited
- Zhiqiang Chen
- G01 - MEASURING TESTING
Information Patent Application
A Display Device
- Publication number 20160357311
- Publication date Dec 8, 2016
- BOE TECHNOLOGY GROUP CO., LTD.
- Guangquan Wang
- G02 - OPTICS
Information Patent Application
HIGH-VOLTAGE AUTOMATIC CHANGEOVER SWITCH
- Publication number 20080078922
- Publication date Apr 3, 2008
- Nuctech Company Limited
- Yaohong LIU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Energy spectrum modulation apparatus, material discrimination metho...
- Publication number 20070286329
- Publication date Dec 13, 2007
- Xuewu Wang
- G01 - MEASURING TESTING