For the Inventor, By the Inventor

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Seongnam-si, South Korea

Pen Generations Inc.

USPTO Granted Patents = 3

EPO Patents = 1

Forward Citations = 1

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4 inventors (with patents filed for the assignee):

Yong Hoon Kang (2 out of 11 patents)

Hee Hwan Kwak (1 out of 5 patents)

Young Soo Jung (1 out of 3 patents)

4. Young Ho Choi (1 out of 9 patents)

3 patents: Sort by Forward Citations

1. 10078161 - Optical film and digital pen system using the same (2018-09-18),

2. 9588602 - Liquid crystal display device and electronic pen system using same (2017-03-07),

3. 9134822 - Dot pattern recognizing device and content executing device (2015-09-15),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#126 in Seongnam-si

#2,648 in South Korea

Seongnam-si, South Korea

Pen Generations Inc.

Forward Citations = 1

4 inventors:

Yong Hoon Kang (2 out of 11 patents)

Hee Hwan Kwak (1 out of 5 patents)

Young Soo Jung (1 out of 3 patents)

4. Young Ho Choi (1 out of 9 patents)

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