For the Inventor, By the Inventor

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Shanghai, China

Roi Optoelectronics Technology Co, Ltd.

USPTO Granted Patents = 2

Forward Citations = 0

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4 inventors (with patents filed for the assignee):

Heping Zeng (2 out of 41 patents)

Mengyun Hu (2 out of 28 patents)

Chuan Yang (1 out of 6 patents)

4. Guang Feng (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 12600661 - Fiberglass filter element containing zinc oxide-based composite nanoparticles and method for producing the same (2026-04-14),

2. 12600635 - Process and device for preparing graphene quantum material (2026-04-14),

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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#888 in SHANGHAI

#11,498 in China

Shanghai, China

Roi Optoelectronics Technology Co, Ltd.

Forward Citations = 0

4 inventors:

Heping Zeng (2 out of 41 patents)

Mengyun Hu (2 out of 28 patents)

Chuan Yang (1 out of 6 patents)

4. Guang Feng (1 out of 2 patents)

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