For the Inventor, By the Inventor

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Kennett Square, PA, United States of America

Chromagen Vision LLC

USPTO Granted Patents = 2

% Expired Patents = 50.0

EPO Patents = 1

Forward Citations = 17

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1 inventor (with patents filed for the assignee):

David Andrew Harris (2 out of 2 patents)

2 patents: Sort by Forward Citations

1. 9028064 - Method of making and prescribing tinted lenses (2015-05-12),

2. 8414127 - Method of making and prescribing tinted lenses (2013-04-09),

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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#9 in Kennett Square, PA

#3,422 in Pennsylvania

#94,730 in US

Kennett Square, PA, United States of America

Chromagen Vision LLC

Forward Citations = 17

1 inventor:

David Andrew Harris (2 out of 2 patents)

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