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China Petrochemical Development Corporation

USPTO Granted Patents = 60

% Expired Patents = 60.0

EPO Patents = 9

Forward Citations = 65

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104 inventors (with patents filed for the assignee):

Cheng-Fa Hsieh (19 out of 23 patents)

Pin-To Yao (10 out of 12 patents)

Jih-Dar Hwang (6 out of 6 patents)

4. Chia Jung Tsai (5 out of 5 patents)

5. Chia-Jung Tsai (5 out of 7 patents)

6. Chien-Chang Chiang (4 out of 8 patents)

7. Chien-Hsien Li (4 out of 4 patents)

8. Chia Hui Shen (4 out of 4 patents)

9. Shu-Hung Yang (4 out of 4 patents)

10. Shou-Li Luo (4 out of 4 patents)

11. Chia-Hui Shen (3 out of 5 patents)

12. Ya-Ping Chen (3 out of 4 patents)

13. Yung-Shun Kung (3 out of 3 patents)

14. Yao-Ching Tsai (3 out of 3 patents)

15. Chih-Wei Chang (3 out of 6 patents)

Core Competencies:

Hydroxylamine

Carboxylic Acid

Caprolactam

Epoxide

Cyclohexanone

Catalyst Composition

Organic Light-Emitting Diode

Recycling Method

Molecular Sieve

Polishing Composition

Electrolyte Solution

60 patents: Sort by Forward Citations

1. 11408015 - Expression vector, recombinant microorganism and method for producing 1,5-diaminopentane (2022-08-09),

2. 10800721 - Method for preparing 2-Cyclohexyl cyclohexanol (2020-10-13),

3. 10787408 - Method for producing 9,9-bis(3-phenyl-4-(2-hydroxyethoxy)phenyl)fluorene (2020-09-29),

4. 10232417 - Recycling method and apparatus for soil contaminated with mercury and dioxin (2019-03-19),

5. 10214483 - Titanium-silicalite molecular sieve, method for preparing the same and method for preparing cyclohexanone oxime using the molecular sieve (2019-02-26),

6. 10023515 - Method for preparing cyclohexanone by hydrogenating phenol (2018-07-17),

7. 9902700 - Method and system for preparing caprolactam (2018-02-27),

8. 9669395 - Catalyst composition for preparing O-phenylphenol and method for preparing O-phenylphenol with the catalyst composition (2017-06-06),

9. 9550721 - Method for preparing dimethyl 1,4-cyclohexanedicarboxylate and method for preparing 1,4-cyclohexanedimethanol (2017-01-24),

10. 9518024 - Method and system for preparing caprolactam (2016-12-13),

11. 9486760 - Fluid mixing device (2016-11-08),

12. 9434683 - Titanium-silicalite molecular sieve, method for preparing the same and method for preparing cyclohexanone oxime using the molecular sieve (2016-09-06),

13. 9371238 - Titanium-silicalite molecular sieve, method for preparing the same and method for preparing cyclohexanone oxime using the molecular sieve (2016-06-21),

14. 9206101 - Method for hydroxylation of phenol (2015-12-08),

15. 9196923 - Electrolyte solution having ionic liquid and lithium-ion battery having the same (2015-11-24),

Company Overview

China Petrochemical Development Corporation, headquartered in Taipei, Taiwan, specializes in the development and manufacturing of chemical processes. The company focuses on key technologies such as hydroxylamine, carboxylic acid, and caprolactam, contributing to various industrial applications. Additionally, CPDC is involved in advanced fields like organic light-emitting diodes and catalyst compositions, emphasizing innovation in recycling methods and sustainable practices within the chemical industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

60 Patents

#62 in Taipei

#351 in Taiwan

#12,083 in the World

China Petrochemical Development Corporation

Forward Citations = 65

104 inventors:

Cheng-Fa Hsieh (19 out of 23 patents)

Pin-To Yao (10 out of 12 patents)

Jih-Dar Hwang (6 out of 6 patents)

4. Chia Jung Tsai (5 out of 5 patents)

5. Chia-Jung Tsai (5 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: China Petrochemical Development Corporation. Retrieved from https://idiyas.com/company/china-petrochemical-development

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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