Growing community of inventors

Seongnam-si, South Korea

Chang Joon Ro

Average Co-Inventor Count = 2.67

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 7

Chang Joon RoTae Woo Kim (84 patents)Chang Joon RoTae Woo Kim (2 patents)Chang Joon RoSung Il Choi (1 patent)Chang Joon RoHyo Sung Cho (1 patent)Chang Joon RoChang Joon Ro (2 patents)Tae Woo KimTae Woo Kim (84 patents)Tae Woo KimTae Woo Kim (10 patents)Sung Il ChoiSung Il Choi (32 patents)Hyo Sung ChoHyo Sung Cho (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Vatech Ewoo Holdings Co., Ltd. (2 from 88 patents)

2. Vatech Co., Ltd. (2 from 74 patents)


2 patents:

1. 7995704 - Panoramic x-ray photographing apparatus and method for photographing using the same

2. 7961841 - X-ray photographing apparatus

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as of
1/11/2026
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