Jih-Dar Hwang

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Taipei City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for preparing caprolactam
- Patent number 9,902,700
- Issue date Feb 27, 2018
- China Petrochemical Development Corporation
- Yung-Shun Kung
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method and system for preparing caprolactam
- Patent number 9,518,024
- Issue date Dec 13, 2016
- China Petrochemical Development Corporation
- Yung-Shun Kung
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for continuously preparing carboxylic acid ester
- Patent number 9,012,679
- Issue date Apr 21, 2015
- China Petrochemical Development Corporation
- Jih-Dar Hwang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Recycling system for hydroxylamine formation and oximation
- Patent number 7,785,549
- Issue date Aug 31, 2010
- China Petrochemical Development Corporation
- Jih-Dar Hwang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for production of cyclohexanone oxime
- Patent number 7,671,236
- Issue date Mar 2, 2010
- China Petrochemical Development Corporation
- Jih-Dar Hwang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of recovering adipic acid and 6-hydroxycaproic acid from was...
- Patent number 6,063,958
- Issue date May 16, 2000
- China Petrochemical Development Corporation
- Kuang-Ruei Chen
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM FOR PREPARING CAPROLACTAM
- Publication number 20170121289
- Publication date May 4, 2017
- China Petrochemical Development Corporation
- Yung-Shun Kung
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND SYSTEM FOR PREPARING CAPROLACTAM
- Publication number 20160237038
- Publication date Aug 18, 2016
- China Petrochemical Development Corporation
- Yung-Shun Kung
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR CONTINUOUSLY PREPARING CARBOXYLIC ACID ESTER
- Publication number 20130303796
- Publication date Nov 14, 2013
- China Petrochemical Development Corporation, Taipei (Taiwan)
- Jih-Dar Hwang
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Recycling system for hydroxylamine formation and oximation
- Publication number 20080167495
- Publication date Jul 10, 2008
- China Petrochemical Development Corporation
- Jih-Dar Hwang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Process for production of cyclohexanone oxime
- Publication number 20080167496
- Publication date Jul 10, 2008
- China Petrochemical Development Corporation
- Jih-Dar Hwang
- C07 - ORGANIC CHEMISTRY