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For the Inventor, By the Inventor

Ulsan, South Korea

Kum LLC


USPTO Granted Patents = 20

% Expired Patents = 25.0


Forward Citations = 61

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17 inventors (with patents filed for the assignee):

goldMedal Fritz Lüttgens (8 out of 8 patents)

silverMedal Fritz Lüttgens (5 out of 9 patents)

bronzeMedal Yun Jae Jung (3 out of 16 patents)

4.  Anbumani Neelamegam (3 out of 3 patents)

5.  Chan Gu Yun (3 out of 3 patents)

6.  Dong Hoon Lee (2 out of 238 patents)

7.  Young Joo Yun (2 out of 3 patents)

8.  Sang Ho Bae (2 out of 3 patents)

9.  Young Il Park (2 out of 2 patents)

10.  Seung Myeon Bae (1 out of 2 patents)

11.  Fritz Luettgens (1 out of 3 patents)

12.  Sam Gyun Lee (1 out of 4 patents)

13.  Jin Su Choi (1 out of 1 patent)

14.  Hyeongrak Kim (1 out of 1 patent)

15.  Seungmyeon Bae (1 out of 1 patent)


20 patents:

1. 12756141 - Connector locking device (2026-10-06),
2. 12506300 - Connector assembly (2025-12-23),
3. 12506284 - Waterproof electrical connector (2025-12-23),
4. 11978983 - Connector assembly for use in a vehicle (2024-05-07),
5. 11824308 - Connector assembly having a device for dual position confirmation (2023-11-21),
6. 11688979 - Connector assembly (2023-06-27),
7. 8881410 - Sharpener, especially for a cosmetic or pharmaceutical pencil (2014-11-11),
8. 8769835 - Pencil sharpener and method of producing it (2014-07-08),
9. 7363714 - Pencil sharpener (2008-04-29),
10. 7225547 - Pencil sharpener (2007-06-05),
11. 7036231 - Sharpener for an oval pencil (2006-05-02),
12. 6976314 - Sharpener for soft-core pencils (2005-12-20),
13. 6722803 - Self-cleaning pencil (2004-04-20),
14. 6634108 - Sharpener for sharpening a soft-core pencil (2003-10-21),
15. 6397479 - Sharpener, in particular for soft-core pencils (2002-06-04),
Company Overview
Kum LLC, based in Ulsan, South Korea, specializes in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions that enhance performance and sustainability, particularly in sectors such as automotive, electronics, and construction. With a commitment to research and development, Kum LLC aims to leverage cutting-edge technology to meet the evolving needs of its clients while contributing to advancements in material science and engineering.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

20 Patents

#12 in Ulsan

#631 in South Korea

#31,264 in the World

Ulsan, KR
Ulsan, South Korea

Kum LLC

Forward Citations = 61

17 inventors:

goldMedal Fritz Lüttgens (8 out of 8 patents)

silverMedal Fritz Lüttgens (5 out of 9 patents)

bronzeMedal Yun Jae Jung (3 out of 16 patents)

4.  Anbumani Neelamegam (3 out of 3 patents)

5.  Chan Gu Yun (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kum LLC. Retrieved from https://idiyas.com/company/kum

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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