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For the Inventor, By the Inventor

Seoul, South Korea

Grenex Limited


USPTO Granted Patents = 3


Trademarks = 1

Forward Citations = 12

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3 inventors (with patents filed for the assignee):

goldMedal Chungchang Kuk (2 out of 2 patents)

silverMedal Younglong Kuk (1 out of 2 patents)

bronzeMedal Newton B White, Jr (1 out of 1 patent)


3 patents:

1. 11724218 - Backwash suction device of fibrous filter (2023-08-15),
2. 11504655 - Backwashing suction device for fabric filtration apparatus (2022-11-22),
3. 7454378 - Exchange method and apparatus (2008-11-18),
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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#964 in Seoul

#2,785 in South Korea

Seoul, KR
Seoul, South Korea

Grenex Limited

Forward Citations = 12

3 inventors:

goldMedal Chungchang Kuk (2 out of 2 patents)

silverMedal Younglong Kuk (1 out of 2 patents)

bronzeMedal Newton B White, Jr (1 out of 1 patent)

Please report any incorrect information to [email protected]
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