Chang; Goang-Cheng

Patent Applications and Registrations

Patent applications and USPTO patent grants for Chang; Goang-Cheng.The latest application filed is for "method for manufacturing high purity sulfuric acid".

Company Profile

1.4.5

Chang; Goang-Cheng - Taipei TW
CHANG; Goang-Cheng - TAIPEI CITY TW
Chang; Goang Cheng - Kaohsiung TW

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
System for manufacturing high purity sulfuric acid Grant 10,351,427 - Dove , et al. July 16, 2	2019-07-16
Method For Manufacturing High Purity Sulfuric Acid App 20180162731 - DOVE; Curtis Douglas ; et al.	2018-06-14
Method for manufacturing high purity sulfuric acid Grant 9,926,198 - Dove , et al. March 27, 2	2018-03-27
Method For Manufacturing High Purity Sulfuric Acid App 20140326593 - DOVE; Curtis Douglas ; et al.	2014-11-06
Electrodialysis method for purifying of silicate-containing potassium hydroxide etching solution Grant 8,088,266 - Dove , et al. January 3, 2	2012-01-03
Electrodialysis Method For Treatment Of Silicate-containing Potassium Hydroxide Etching Waste Solution App 20100213077 - DOVE; CURTIS DOUGLAS ; et al.	2010-08-26
Method for cleaning semiconductor manufacturing system App 20040168712 - Chao, Wei-Sheng ; et al.	2004-09-02
Method for detecting quantity variation of high purity liquid chemicals and devices to carry out the method Grant 6,734,686 - Lin , et al. May 11, 2	2004-05-11
Method for detecting quantity variation of high purity liquid chemicals and devices to carry out the method App 20030189433 - Lin, Chi-Hui ; et al.	2003-10-09

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