Dao-Hong Zheng

Follow

Person

Manor Park, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Gas control device and method of supplying gas
- Patent number 6,648,021
- Issue date Nov 18, 2003
- Air Products and Chemicals, Inc.
- Dao-Hong Zheng
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Gas purification unit
- Patent number 6,572,688
- Issue date Jun 3, 2003
- Air Products and Chemicals, Inc.
- John Irven
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Gas control device and method of supplying gas
- Patent number 6,527,009
- Issue date Mar 4, 2003
- Air Products and Chemicals, Inc.
- Dao-Hong Zheng
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Gas control device and method of supplying gas
- Patent number 6,314,986
- Issue date Nov 13, 2001
- Air Products and Chemicals, Inc.
- Dao-Hong Zheng
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Control vent system for ultra-high purity delivery system for lique...
- Patent number 6,085,548
- Issue date Jul 11, 2000
- Air Products and Chemicals, Inc.
- Naser Mahmud Chowdhury
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Apparatus for supplying high purity fluid
- Patent number 5,409,526
- Issue date Apr 25, 1995
- Air Products and Chemicals, Inc.
- Dao-Hong Zheng
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS

Patents Applicationslast 30 patents

Information Patent Application
Gas control device and method of supplying gas
- Publication number 20020124883
- Publication date Sep 12, 2002
- Dao-Hong Zheng
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Gas purification unit
- Publication number 20020112608
- Publication date Aug 22, 2002
- John Irven
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Gas control device and method of supplying gas
- Publication number 20020096211
- Publication date Jul 25, 2002
- Dao-Hong Zheng
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Gas control device and method of supplying gas
- Publication number 20020023677
- Publication date Feb 28, 2002
- Dao-Hong Zheng
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Gas control device and method of supplying gas
- Publication number 20010039961
- Publication date Nov 15, 2001
- Dao-Hong Zheng
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Gas control device and method of supplying gas
- Publication number 20010029979
- Publication date Oct 18, 2001
- Dao-Hong Zheng
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC