Ventilated hood for firefighter
CA 2016969 C · Owner: Grilliot, William L. · Inventors: Grilliot, Mary I.; Grilliot, William L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a firefighter's hood which protects the firefighter's head, neck and shoulder, regions in a conventional manner while also providing, means by which the firefighter's head is ventilated. The firefighter's hood of this invention includes means which establish an opening in the upper portion of the hood for escape of heat from the upper part of the firefighter's head. Thus, there is ventilation of the head portion of the firefighter. A firefighter's hood of this invention includes a head section having major portion of thermal insulation material. The upper portion of the head section comprises any material or means having lesser thermal insulation qualities than the …
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 May 16, 1990 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2012.
- 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.