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For the Inventor, By the Inventor

Seongnam, South Korea

Kt Corporation


USPTO Granted Patents = 1,253

% Expired Patents = 12.3



Trademarks = 4

Forward Citations = 4,949

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1,008 inventors (with patents filed for the assignee):

goldMedal Bae Keun Lee (257 out of 361 patents)

silverMedal Woo-jin Choi (160 out of 174 patents)

bronzeMedal Joo Young Kim (156 out of 253 patents)

4.  Kyujin Park (95 out of 144 patents)

5.  Sung-pyo Hong (77 out of 78 patents)

6.  Jae Cheol Kwon (61 out of 61 patents)

7.  Ki-tae Kim (41 out of 62 patents)

8.  Ki-Ho Lee (33 out of 49 patents)

9.  Youn-Ok Park (32 out of 60 patents)

10.  Yang Seok Jeong (30 out of 33 patents)

11.  Yung-Ha Ji (27 out of 27 patents)

12.  Chul-Sik Yoon (27 out of 43 patents)

13.  Yong-Gyoo Lee (24 out of 24 patents)

14.  Byung-Han Ryu (18 out of 63 patents)

15.  Jin Hyoung Lee (18 out of 21 patents)


Core Competencies:
Video Signal Encoding
Video Signal Decoding
Sidelink Communication
Uplink Data Transmission
Quantum Key Distribution
Spatial Model Generation
Battery Saving Technology
Multicast Service Data

1,253 patents:

1. 12750472 - Video signal processing method and device (2026-09-29),
2. 12744897 - Video signal processing method and device (2026-09-22),
3. 12739444 - Method and apparatus for processing video signal (2026-09-15),
4. 12732805 - Integrated terminal device and control method of integrated terminal device (2026-09-08),
5. 12726632 - Image encoding/decoding method and apparatus (2026-09-01),
6. 12720625 - Method and device for transmitting or receiving data in dual connectivity state (2026-08-25),
7. 12720102 - Method and apparatus for processing video signal (2026-08-25),
8. 12713468 - METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURE FOR COVERAGE ENHANCEMENT (2026-08-18),
9. 12713012 - METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL (2026-08-18),
10. 12707048 - Method and apparatus for processing video signal (2026-08-11),
11. 12706673 - Method and apparatus for estimating optimal optical signal transmission power for transmission network equipment (2026-08-11),
12. 12701255 - Method and apparatus for processing video signal (2026-08-04),
13. 12701098 - Method and apparatus for supporting remote access to internet of things device connected to private networks (2026-08-04),
14. 12695865 - Method and device for processing video signal (2026-07-28),
15. 12689740 - Video signal processing method and device (2026-07-21),
Kt Corporation, headquartered in Seongnam, South Korea, specializes in advanced video signal processing technologies. The company focuses on developing solutions for video signal encoding and decoding, enhancing communication through sidelink and uplink data transmission. Kt Corporation is also engaged in innovative areas such as quantum key distribution and spatial model generation, alongside efforts to improve battery-saving technologies and multicast service data. Their research and development initiatives aim to drive advancements in multimedia communication and data security.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Kt Corporation
1,253 Patents

#1 in Seongnam

#24 in South Korea

#804 in the World

Seongnam, KR
Seongnam, South Korea

Kt Corporation

Forward Citations = 4,949

1,008 inventors:

goldMedal Bae Keun Lee (257 out of 361 patents)

silverMedal Woo-jin Choi (160 out of 174 patents)

bronzeMedal Joo Young Kim (156 out of 253 patents)

4.  Kyujin Park (95 out of 144 patents)

5.  Sung-pyo Hong (77 out of 78 patents)

Please report any incorrect information to [email protected]
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