Photochromic ocular devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 8, 2009
Grant Date -
May 24, 2007
app pub date -
Aug 3, 2005
filing date -
Mar 20, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Described are photochromic ocular devices such as contact lenses and intraocular lenses made of an organic polymeric material and at least one photochromic material capable upon exposure to actinic radiation to change from a less ultraviolet radiation absorbing unactivated form to a more ultraviolet radiation absorbing activated form. The photochromic ocular device is capable upon exposure to actinic radiation to exhibit a ratio of greater than 0.5:1.0 of increased ultraviolet radiation absorbance to increased visible radiation absorbance as measured in the Ultraviolet Photochromic Performance Test described herein.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully