Contact lens inverting apparatus and method
CA 2210253 C · Owner: Moorehead, Michael · Inventors: Moorehead, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for inverting a plurality of contact lenses between separate processing steps which treat the opposite concave and convex surfaces of the lenses. The lenses are initially placed convex sideup on a perforated lens support surface and are subjected to the first processing step which treats this surface of the lens. The support surface is then passed over an elongated air stream which traverses and is directed to impinge upon the bottom surface of the support whereby the air stream passes through the perforations in the support and inverts the lenses from the convex side-up position to a concave side-up position whereupon this surface of the lenses may be …
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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 December 22, 1995 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2017.
- 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.