Intraocular lens with expandable haptic
CA 2006712 A1 · Owner: Feaster, Fred, T. · Inventors: Feaster, Fred, T.; Feaster, Fred, T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The intraocular implant has a solid non-inflatable, non-expandable, transparent optic member and an expandable haptic means coupled to the outer periphery of the optic. The haptic means is expandable after insertion into the eye in a first embodiment, by externally injected fluid and in, a second embodiment, by liquid from the aqueous of the eye. In the first embodiment the haptic means is inflatable. In the second embodiment the haptic means is formed of a material capable of combining with or taking up liquid from the aqueous of the eye resulting in expansion of the haptic means.
Read the whole patent
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 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2011.
- 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.