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Seoul, South Korea

Beadtech Inc.


USPTO Granted Patents = 3

Forward Citations = 1

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6 inventors (with patents filed for the assignee):

goldMedal Tae-Kyung Lee (2 out of 5 patents)

silverMedal Sun-Jong Ryoo (2 out of 2 patents)

bronzeMedal Yoon-Sik Lee (1 out of 9 patents)

4.  Ju-Han Kim (1 out of 1 patent)

5.  Yoon Sik Lee (1 out of 1 patent)

6.  Sun Jong Ryoo (1 out of 1 patent)


3 patents:

1. 7442745 - Aminomethyl polystyrene resin and preparation process for the same (2008-10-28),
2. 6875822 - Process for preparing tritylated polystyrene resin (2005-04-05),
3. 6369169 - Modified polystyrene spherical, resin and process for decontaminating waste water by using the same (2002-04-09),
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USPTO Data Jan 1 1976 - Dec 2 2025

3 Patents

#855 in Seoul

#2,637 in South Korea

...
Seoul, South Korea

Beadtech Inc.

Forward Citations = 1

6 inventors:

goldMedal Tae-Kyung Lee (2 out of 5 patents)

silverMedal Sun-Jong Ryoo (2 out of 2 patents)

bronzeMedal Yoon-Sik Lee (1 out of 9 patents)

4.  Ju-Han Kim (1 out of 1 patent)

5.  Yoon Sik Lee (1 out of 1 patent)

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