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For the Inventor, By the Inventor

Seoul, South Korea

M&k Holdings Inc.

Calculating rank
USPTO Granted Patents = 75

% Expired Patents = 1.3


Forward Citations = 209

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2 inventors (with patents filed for the assignee):

goldMedal Soo Mi Oh (75 out of 167 patents)

silverMedal Moonock Yang (72 out of 164 patents)

bronzeMedal Desmond Rafferty (1 patent)

4.  Nigel Rafferty (1 patent)


Core Competencies:
Image Encoding
Image Decoding
Intra Prediction
Scan Pattern
Moving Picture
Encoding Apparatus
Decoding Apparatus
Prediction Block
Adaptive Techniques
Encoding Method
Decoding Method

75 patents:

1. RE49565 - Apparatus for encoding an image (2023-06-26),
2. 11284072 - Apparatus for decoding an image (2022-03-22),
3. RE48564 - Image decoding apparatus adaptively determining a scan pattern according to an intra prediction mode (2021-05-17),
4. 10979731 - Apparatus for decoding an image (2021-04-13),
5. 10944965 - Apparatus for encoding an image (2021-03-09),
6. 10931966 - Apparatus for decoding an image (2021-02-23),
7. 10602181 - Apparatus for decoding an image (2020-03-24),
8. 10567760 - Apparatus for encoding an image (2020-02-18),
9. 10237572 - Apparatus for decoding an image (2019-03-19),
10. 10136130 - Apparatus for decoding an image (2018-11-20),
11. 10123010 - Apparatus for encoding an image (2018-11-06),
12. 10123009 - Apparatus for encoding an image (2018-11-06),
13. 10116958 - Apparatus for encoding an image (2018-10-30),
14. 10085019 - Method for restoring an intra prediction mode (2018-09-25),
15. 10063854 - Apparatus for decoding an image (2018-08-28),
Company Overview
M&K Holdings Inc., based in Seoul, South Korea, specializes in advanced image encoding and decoding technologies. The company focuses on developing innovative solutions for intra prediction, scan patterns, and moving picture encoding and decoding apparatuses. M&K Holdings is dedicated to enhancing the efficiency and quality of image processing, catering to various applications in multimedia and digital imaging. Its expertise positions the company as a key player in the evolving landscape of image technology.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

M&k Holdings Inc. USPTO Patent Assignee Logo
75 Patents

#98 in Seoul

#232 in South Korea

#10,015 in the World

Seoul, KR
Seoul, South Korea

M&k Holdings Inc.

Forward Citations = 209

2 inventors:

goldMedal Soo Mi Oh (75 out of 167 patents)

silverMedal Moonock Yang (72 out of 164 patents)

bronzeMedal Desmond Rafferty (1 patent)

4.  Nigel Rafferty (1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: M&k Holdings Inc.. Retrieved from https://idiyas.com/company/m-and-k-holdings

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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