Goang-Cheng CHANG

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TAIPEI CITY, TW

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Patents Grantslast 30 patents

Information Patent Grant
System for manufacturing high purity sulfuric acid
- Patent number 10,351,427
- Issue date Jul 16, 2019
- ASIA UNION ELECTRONIC CHEMICAL CORP.
- Curtis Douglas Dove
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for manufacturing high purity sulfuric acid
- Patent number 9,926,198
- Issue date Mar 27, 2018
- ASIA UNION ELECTRONIC CHEMICAL CORP.
- Curtis Douglas Dove
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Electrodialysis method for purifying of silicate-containing potassi...
- Patent number 8,088,266
- Issue date Jan 3, 2012
- Asia Union Electronic Chemical Corporation
- Curtis Douglas Dove
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for detecting quantity variation of high purity liquid chemi...
- Patent number 6,734,686
- Issue date May 11, 2004
- Nanmat Technology Co. Ltd.
- Chi-Hui Lin
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MANUFACTURING HIGH PURITY SULFURIC ACID
- Publication number 20180162731
- Publication date Jun 14, 2018
- ASIA UNION ELECTRONIC CHEMICAL CORP.
- Curtis Douglas DOVE
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD FOR MANUFACTURING HIGH PURITY SULFURIC ACID
- Publication number 20140326593
- Publication date Nov 6, 2014
- ASIA UNION ELECTRONICAL CHEMICAL CORP.
- Curtis Douglas DOVE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ELECTRODIALYSIS METHOD FOR TREATMENT OF SILICATE-CONTAINING POTASSI...
- Publication number 20100213077
- Publication date Aug 26, 2010
- CURTIS DOUGLAS DOVE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method for cleaning semiconductor manufacturing system
- Publication number 20040168712
- Publication date Sep 2, 2004
- Nanmat Technology Co., Ltd.
- Wei-Sheng Chao
- B08 - CLEANING
Information Patent Application
Method for detecting quantity variation of high purity liquid chemi...
- Publication number 20030189433
- Publication date Oct 9, 2003
- Nanmat Technology Co., Ltd.
- Chi-Hui Lin
- G01 - MEASURING TESTING