Unidirectional occluder
CA 1308285 C · Owner: Vila-Coro, Alejandro A. · Inventors: Vila-Coro, Antonio A.; Vila-Coro, Alejandro A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an improved device for use in the detection and identification of various misalignment conditions of the eye, for example heterophorias, strabismus and the like. The device in its, preferred embodiment, includes a unidirectional occluder having a occluding disk which occludes an individuals sight in one direction through the disk while allowing direct observation of the occluded eye from the other side of the disk. Preferred embodiments include a self contained hand held support having a handle region and an occluder region, the occluder region being of the size effective to occlude vision of a fixation target through one or both eyes, the disk formed of a …
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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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
- 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.