Temporary protective layer on polymeric articles
CA 2372460 A1 · Owner: Vision-Ease Lens, Inc. · Inventors: Hage, Martin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The temporary protection of polymeric articles particularly polymeric , articles with optical qualities such as ophthalmic lenses formed by the lamination of individual lens blanks, can be effected by the application of protective polymeric compositions to the surface of the polymer article the , composition being applied as a dry film or coating a film on a surface of the polymeric article. The individual lens blank is prepared for lamination or coating by application of a selective solvent to the polymeric film the , selective solvent dissolving, dispersing or otherwise removing the protective polymeric film but neither reacting with etching or dissolving the , composition of the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 29, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.