Impact resistant face shield
CA 2226845 C · Owner: Oakley, Inc. · Inventors: Jarvis, Edward C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An impact resistant face shield that includes a single formed arcuate lens portion (12) that, in a first orientation has a first curvature (16) extending in a horizontal direction and a second curvature (18) extending in a vertical direction. The lens portion has a top portion and a bottom portion (20) that extends relatively inwardly toward the face of the wearer relative to an intermediate portion disposed between the top and bottom portions. Each curvature of the lens defines an arc of a circle having a substantially uniform radius to produce nominal levels of distortion, thereby reducing the prism effects created by the lens and providing an optically corrected viewing window.
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 July 3, 1996 and granted March 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2018.
- 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.