Chemical oxygen generator
CA 2107336 C · Owner: Be Intellectual Property, Inc. · Inventors: Cannon, James C.; Zhang, Yunchang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved chemical oxygen generator (10) includes an oxygen generating candle (12) having an oxygen source which, upon decomposition will yield oxygen and a nontoxic additive, to smooth decomposition and suppress formation of toxic free chlorine gas. The nontoxic additive may be taken from the group consisting of: (1) the oxides and hydroxides of calcium and the rare earth metals; (2) the hydroxides of magnesium; and (3) mixture: of the foregoing. A complete chemical oxygen generator utilizes the candle (12) of the invention. The oxygen generator preferably includes a canister (14) oxygen-, generating candle (12), and an ignition device (16). Triggering of the ignition device ignites an …
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 March 17, 1992 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2014.
- 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.