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Seoul, South Korea

Cheiljedang Corp.

USPTO Granted Patents = 34

% Expired Patents = 29.4

Trademarks = 3

Forward Citations = 199

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136 inventors (with patents filed for the assignee):

Kwang Hyuk Lee (5 out of 6 patents)

Jong Hoon Kim (5 out of 125 patents)

Jee Woong Lim (4 out of 11 patents)

4. Hyung Chul Ryu (4 out of 13 patents)

5. Ji Young Noh (4 out of 13 patents)

6. Hyung Ok Chun (4 out of 6 patents)

7. So Young Wang (4 out of 4 patents)

8. Chung Keun Rhee (3 out of 4 patents)

9. Myung Xik Xiang (3 out of 3 patents)

10. Young Gi Kim (3 out of 8 patents)

11. Kwang Ho Lee (3 out of 62 patents)

12. Il Hwan Cho (3 out of 17 patents)

13. Sung Hak Lee (3 out of 9 patents)

14. Youn Ha Lee (3 out of 3 patents)

15. Je Hak Kim (3 out of 7 patents)

Core Competencies:

L-Threonine Production

Microorganism

Erythropoietin

L-Glutamine

Protease VapK

Trehalose Synthase

Cyclooxygenase Inhibitors

Simvastatin

Erythritol

Vaccine Preparation

Fermentation Products

Livestock Wastewater

34 patents: Sort by Forward Citations

1. 8486670 - [object Object] (2013-07-16),

2. 7378267 - Method for L-threonine production (2008-05-27),

3. 7244608 - Microorganism producing 5'-inosinic acid and process for producing 5′-inosinic acid using the same (2007-07-17),

4. 7192760 - Microorganisms and processes for producing L-glutamine (2007-03-20),

5. 7098318 - Fusion protein having enhanced in vivo activity of erythropoietin (2006-08-29),

6. 7091326 - Fusion protein having enhanced in vivo erythropoietin activity (2006-08-15),

7. 7060305 - [object Object] (2006-06-13),

8. 7011961 - Method for L-threonine production (2006-03-14),

9. 7008786 - Microorganism producing L-lysine and processes for producing L-lysine using the same (2006-03-07),

10. 6987087 - [object Object] (2006-01-17),

11. 6984506 - Microorganisms and processes for producing L-glutamine (2006-01-10),

12. 6955907 - Alkaline, protease VapK suitable for laundry detergent, VapK gene, recombinant expression vector, and transformed microorganisms (2005-10-18),

13. 6881561 - Endonuclease of immune cell, process for producing the same and immune adjuvant using the same (2005-04-19),

14. 6858408 - Recombinant plasmid pDSBCm, microorganisms transformed therewith, and method for producing an alkaline protease VapK (2005-02-22),

15. 6800474 - Trehalose synthase protein, gene, plasmids, microorganisms, and a process for producing trehalose (2004-10-05),

Cheiljedang Corp., headquartered in Seoul, South Korea, is a leading global player in the food and biotechnology sectors. The company specializes in the development and production of a wide range of food products, including processed foods, seasonings, and ingredients. Cheiljedang is also heavily invested in biotechnology, focusing on fermentation technology and the production of amino acids and other bio-based materials. Its commitment to innovation and sustainability positions it as a key contributor to advancements in food science and health-oriented solutions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

34 Patents

#160 in Seoul

#418 in South Korea

#19,594 in the World

Seoul, South Korea

Cheiljedang Corp.

Forward Citations = 199

136 inventors:

Kwang Hyuk Lee (5 out of 6 patents)

Jong Hoon Kim (5 out of 125 patents)

Jee Woong Lim (4 out of 11 patents)

4. Hyung Chul Ryu (4 out of 13 patents)

5. Ji Young Noh (4 out of 13 patents)

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