Respirator
CA 1280334 C · Owner: White, William Comfort · Inventors: Rodgers, Kevin Dennis, Sr.; White, William Comfort; Parker, Jay Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
30,367, RESPIRATOR, ABSTRACT OF THE DISCLOSURE A face mask for a respirator is equipped with multiple seals on a lip which turns inward at the periphery of the face mask. The seals include at least one fin which extends from the surface of the lip for contact with the face. The respirator has a port for exhalation valve near the nose of the wearer and has pleats for expansion of the mask between the exhalation port and the chin. Inhalation ports are located at the sides of the respirator near the cheeks.
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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- 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.