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For the Inventor, By the Inventor

Daejeon, South Korea

Jin-Eok Kim

This inventor holds 10 USPTO granted patents and 1 EPO patent. Top assignee: Korea Kumho Petrochemical Co., Ltd.. Active years: 1998-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jin-Eok Kim. Retrieved from https://idiyas.com/inventor/jin-eok-kim

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

USPTO Granted Patents = 10

% Patents Active = 90.0

 

Average Co-Inventor Count = 3.4

ph-index = 3

Forward Citations = 30(Granted Patents)


Location History:

  • Taejeon, KR (1998 - 2001)
  • Daejeon, KR (2003 - 2014)

Company Filing History:

goldMedal10 out of 270 
 
Korea Kumho Petrochemical Co., Ltd.
 patents

Years Active: 1998-2014

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10 patents (USPTO):Explore Patents
1. 8835687 - Method for preparation of 4,4'-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine with the base catalyst complex (2014-09-16),
2. 8759587 - Method for preparation of 4,4'-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline (2014-06-24),
3. 8283477 - Method for preparing N-substituted maleimides (2012-10-09),
4. 7528285 - Method for preparing thiomethylphenols (2009-05-05),
5. 7157605 - Method for preparing 4-aminodiphenylamine (2007-01-02),
6. 6552229 - Method for preparing 4-nitroso-substituted aromatic amine (2003-04-22),
7. 6198001 - Manufacturing method for 4-nitrosoaniline from urea and nitrobenzene (2001-03-06),
8. 6156932 - Preparation of 4,4'-dinitrodiphenylamine from urea and nitrobenzene (2000-12-05),
9. 5770774 - Method for preparing 2-methyl-1,4-naphthoquinone (vitamin K.sub.3) (1998-06-23),
10. 5723675 - Method for preparing anthraquinones (1998-03-03),

Title: Innovations of Jin-Eok Kim in Chemical Engineering

Introduction

Jin-Eok Kim is a prominent inventor based in Daejeon, South Korea. He has made significant contributions to the field of chemical engineering, particularly in the preparation of various chemical compounds. With a total of 10 patents to his name, his work has had a substantial impact on the industry.

Latest Patents

One of Jin-Eok Kim's latest patents is a method for the preparation of 4,4'-dinitrodiphenylamine (4,4'-DNDPA) and 4,4'-bis(alkylamino)diphenylamine (4,4'-BAADA) using a base catalyst complex. This innovative method allows for high yield production of 4,4'-DNDPA via the NASH reaction, utilizing a mixture of a bis-quaternary ammonium base and a base catalyst. Additionally, the process includes hydrogenating the resulting 4,4'-DNDPA with a ketone in the presence of hydrogen and a hydrogenation catalyst to produce 4,4'-BAADA in high yield and purity. The catalyst complex used in this invention not only facilitates easy recovery but also provides superior alkaline stability, ultimately reducing production costs.

Another notable patent involves the preparation of 4,4'-dinitrodiphenylamine and 4,4'-bis(alkylamino)diphenylamine by using 4-nitroaniline. This method also achieves high yield for 4,4'-DNDPA by reacting 4-nitroaniline with excess nitrobenzene through the NASH reaction. The process is designed to allow selective preparation of 4,4'-DNDPA without byproducts, simplifying the purification procedure for 4,4'-BAADA.

Career Highlights

Jin-Eok Kim is currently employed at Korea Kumho Petrochemical Co., Ltd., where he continues to innovate and develop new chemical processes. His expertise in chemical engineering has led to advancements that benefit both his company and the broader industry.

Collaborations

Throughout his career, Jin-Eok Kim has collaborated with notable colleagues, including Jeong-Im Won and Young J Joo. These partnerships have fostered a collaborative environment that enhances the innovation process.

Conclusion

Jin-Eok Kim's

Profile summary based on public USPTO records.
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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