Weixin QIAN

Follow

Person

Chengdu, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Particulate sound barrier and sound absorption/insulation board the...
- Patent number 9,607,599
- Issue date Mar 28, 2017
- SICHUAN ZISEN ACOUSTICS TECHNICAL CO., LTD.
- Weixin Qian
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Particulate sound absorption board and preparation method thereof
- Patent number 9,607,597
- Issue date Mar 28, 2017
- SICHUAN ZISEN ACOUSTICS TECHNICAL CO., LTD.
- Weixin Qian
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Particulate Sound Barrier and Sound Absorption/Insulation Board The...
- Publication number 20160118034
- Publication date Apr 28, 2016
- SICHUAN ZISEN ACOUSTICS TECHNICAL CO., LTD.
- Weixin QIAN
- B32 - LAYERED PRODUCTS
Information Patent Application
Particulate Sound Absorption Board and Preparation Method Thereof
- Publication number 20160111076
- Publication date Apr 21, 2016
- SICHUAN ZISEN ACOUSTICS TECHNICAL CO., LTD.
- Weixin QIAN
- G10 - MUSICAL INSTRUMENTS ACOUSTICS