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EPO Patents = 1

Forward Citations = 45

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1 inventor (with patents filed for the assignee):

Junzhong Liang (11 out of 34 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 leading provider of innovative technology solutions in Hong Kong. With a focus on delivering cutting-edge products and services in the field of telecommunications, our company is committed to providing customers with superior quality and performance. From network infrastructure to software development, Perfect Vision Technology (hk) Ltd. offers a comprehensive range of solutions tailored to meet the unique needs of our clients. Visit our website to learn more about how we can help transform your business with the power of technology.

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Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

11 Patents

#278 in Hong Kong

#2,258 in China

#50,205 in the World

Hong Kong, China

Perfect Vision Technology (hk) Ltd.

Forward Citations = 45

1 inventor:

Junzhong Liang (11 out of 34 patents)

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