Protective surgical face mask
CA 1311587 C · Owner: Barle, Louis · Inventors: Barle, Louis; Vliet, Ron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surgical, protective face mask includes a lower portion of sheet material which conforms to the facial characteristics of a wearer to cover the mouth and nose and includes an opening in the region of the eyes having an anatomically contoured covering made of a transparent optical grade plastic material and forms a seal along its periphery to protect the openings of the eye from invasive entry of viral infectious fluids and the like while permitting the wearer to wear spectacles in the normal manner.
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
- Granted December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 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.