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Hong Kong, China

Perfect Vision Technology (Hk) Ltd.

USPTO Granted Patents = 11

% Expired Patents = 63.6

EPO Patents = 1

Forward Citations = 45

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1 inventor (with patents filed for the assignee):

Junzhong Liang (11 out of 35 patents)

11 patents: Sort by Forward Citations

1. 12038627 - Methods and systems of refraction automation for prescribing eyeglasses (2024-07-16),

2. 10893798 - Methods and systems for updating refractive prescriptions and delivering eyeglasses and contact lenses (2021-01-19),

3. 10884265 - Methods and systems for determining refractive corrections of human eyes for eyeglasses (2021-01-05),

4. 10082682 - Methods and systems for measuring human faces for fitting, selecting, and optimizing eyeglasses (2018-09-25),

5. 10048516 - Methods and systems for measuring human faces and eyeglass frames (2018-08-14),

6. 9826899 - Methods and devices for refractive correction of eyes (2017-11-28),

7. 9649032 - Systems and methods for remote measurement of the eyes and delivering of sunglasses and eyeglasses (2017-05-16),

8. 9345399 - Methods and devices for refractive correction of eyes (2016-05-24),

9. 9277863 - Methods and systems for automated measurement of the eyes and delivering of sunglasses and eyeglasses (2016-03-08),

10. 8827448 - Methods and devices for refractive correction of eyes (2014-09-09),

11. 8419185 - Methods and devices for refractive correction of eyes (2013-04-16),

Perfect Vision Technology (Hk) Ltd. is a Hong Kong-based company specializing in advanced optical and imaging technologies. The organization focuses on developing innovative solutions for various applications, including surveillance, industrial inspection, and medical imaging. With a commitment to enhancing visual clarity and precision, Perfect Vision Technology leverages cutting-edge research in optics and imaging systems to deliver high-quality products that meet the evolving needs of its clients across diverse sectors.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

11 Patents

#288 in Hong Kong

#2,539 in China

#51,671 in the World

Hong Kong, China

Perfect Vision Technology (Hk) Ltd.

Forward Citations = 45

1 inventor:

Junzhong Liang (11 out of 35 patents)

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