For the Inventor, By the Inventor

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Gyeonggi-do, South Korea

Hwaback Engineering Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 9

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4 inventors (with patents filed for the assignee):

Kang Gu Lee (2 out of 6 patents)

Sang Jeen Hong (2 out of 2 patents)

Jong Hwan Ahn (1 out of 1 patent)

4. Sang Youl Lee (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 8332170 - Apparatus and method for detecting arcs (2012-12-11),

2. 7781325 - Copper pillar tin bump on semiconductor chip and method of forming the same (2010-08-24),

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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#246 in Gyeonggi-do

#3,602 in South Korea

Gyeonggi-do, South Korea

Hwaback Engineering Co., Ltd.

Forward Citations = 9

4 inventors:

Kang Gu Lee (2 out of 6 patents)

Sang Jeen Hong (2 out of 2 patents)

Jong Hwan Ahn (1 out of 1 patent)

4. Sang Youl Lee (1 out of 1 patent)

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