Artificial lens
CA 1323957 C · Owner: Kelman, Charles D. · Inventors: Kelman, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an artificial lens adapted for implantation in the human eye and the method for implanting such lens. The lens is of pliable material so that it may be folded or curled for insertion through a minimum length incision. It has a medial optic portion having a posterior concave surface corresponding to the anterior surface of the natural lens when the latter is in its flattest natural position and haptic portions for seating the lens in the eye such that the posterior concave surface of the medial optic portion of the artificial lens seats directly against the anterior surface of the natural lens of the eye which remains in and is not removed from the eye. The method according to …
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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
- Granted November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.