Xiaofang Guan

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Changchun, CN

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Patents Grantslast 30 patents

Information Patent Grant
Electrified railway power grid system without negative sequence in...
- Patent number 10,850,637
- Issue date Dec 1, 2020
- Jilin University
- Yuquan Song
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Welding structure with double-inclined surface of no bumping and no...
- Patent number 9,163,361
- Issue date Oct 20, 2015
- JILIN UNIVERSITY
- Yuquan Song
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Adjustable hydraulic press with both upper and lower double action
- Patent number 8,082,771
- Issue date Dec 27, 2011
- Jilin University
- Yuquan Song
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
ELECTRIFIED RAILWAY POWER GRID SYSTEM WITHOUT NEGATIVE SEQUENCE IN...
- Publication number 20180345822
- Publication date Dec 6, 2018
- JILIN UNIVERSITY
- Yuquan Song
- B60 - VEHICLES IN GENERAL
Information Patent Application
Welding Structure with Double-Inclined Surface of No Bumping and No...
- Publication number 20130186968
- Publication date Jul 25, 2013
- Jilin University
- Yuquan Song
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Adjustable Hydraulic Press With Both Upper And Lower Double Action
- Publication number 20080098908
- Publication date May 1, 2008
- Jilin University
- Yuquan Song
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...