Changqing Zhou

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Container-type biogas purification film method purification system
- Patent number 9,975,085
- Issue date May 22, 2018
- BEIJING HELEE BIO-ENERGY LTD.
- Wenzhi Pan
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

Information Patent Application
CONTAINER-TYPE BIOGAS PURIFICATION FILM METHOD PURIFICATION SYSTEM
- Publication number 20160166980
- Publication date Jun 16, 2016
- BEIJING HELEE BIO-ENERGY LTD.
- Wenzhi Pan
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL