Protective device, individual, portable, with total insulation and controlled atmosphere
CA 2024296 C · Owner: Grenfil S.R.L. · Inventors: Galvan, Dino; Marcoaldi, Gianfranco; Antolini, Elvio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable device allowing the rapid aiding of individuals suffering from difficulty in breathing movement and communication, in a situation of environmental risk in the form of toxic and contaminating agents said, device comprising a wrapping of flexible material impermeable to gas, vapour, fumes, aerosol and dusts a, window in said wrapping, hermetically closed by a flexible transparent material for the visualization of the inside thereof, a box-shaped body in fluid commmunication with an extremity of said wrapping and carrying a system for the filtering, feeding and pressurization of the air and at, least one exhaust valve of the air in said wrapping.
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 August 30, 1990 and granted April 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 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.