Light-blocking air vents for eyewear
CA 2528126 C · Owner: Dioptics Medical Products, Inc. · Inventors: Rhea, Eric; Welling Lane, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides light-blocking air vents for eyewear. A frame for the eyewear has a brow web that extends approximately horizontally from a top portion of the frame. The brow web includes at least one ventilation aperture having a internal side that is substantially sloped with respect to a top surface of the brow web. One or more lenses are mounted to the frame. Air is allowed to pass through the aperture. However by providing that the internal , side of the aperture is substantially sloped light is blocked from entering , through the aperture. The brow web may include a plurality of ventilation apertures for each of two lenses mounted to the frame. The apertures for each …
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 June 22, 2004 and granted June 2, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2026.
- 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.