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For the Inventor, By the Inventor

Hong Kong, China

Perfect Vision Technology (Hk) Ltd.


USPTO Granted Patents = 11

% Expired Patents = 63.6


Forward Citations = 45

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1 inventor (with patents filed for the assignee):

goldMedal Junzhong Liang (11 out of 35 patents)


11 patents:

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),
Company Overview
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 synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

11 Patents

#288 in Hong Kong

#2,548 in China

#51,714 in the World

Hong Kong, CN
Hong Kong, China

Perfect Vision Technology (Hk) Ltd.

Forward Citations = 45

1 inventor:

goldMedal Junzhong Liang (11 out of 35 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Perfect Vision Technology (Hk) Ltd.. Retrieved from https://idiyas.com/company/perfect-vision-technology-hk

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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