Azide gas generating composition for inflatable devices
CA 2012607 C · Owner: Wilson, Michael A. · Inventors: Wilson, Michael A.; Poole, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Gas generating compositions containing an inorganic metal azide, a primary metal oxide oxidizing compound and a secondary oxidizing compound in combination with clay as a means of controlling the burn rate. Metal nitrates are preferred as the secondary oxidizing compound.
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.
Why it's free to use
- Filed March 20, 1990 and granted December 24, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 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.