Photochromic optical article having allophanate protective coating and process for making same
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United States of America Patent
Stats
-
Jun 27, 2017
Issued Date -
N/A
app pub date -
Oct 3, 2014
filing date -
Oct 11, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A photochromic optical article is provided, which includes: an optical substrate; a photochromic layer over a surface of the optical substrate, wherein the photochromic layer includes a photochromic compound; and a protective layer over the photochromic layer, wherein the protective layer includes a matrix that includes residues of an ethylenically unsaturated radically polymerizable material that includes at least one allophanate group. A method of forming the photochromic optical article is also provided.
First Claim
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International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- B05C:APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- B29D:PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FRO....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G03C:PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES....
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- C08J Class
- 34.68 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 27, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 27, 2028 |
