Gas generating agent and gas generator for automobile air bags
CA 2118698 A1 · Owner: Shimosada, Hajime · Inventors: Yamamoto, Yoshimasa; Shimosada, Hajime; Moriyuki, Naosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A gas generating agent containing at least one compound (A) selected from the group consisting of maleohydrazide carbohydrazide, thiocarbohydrazide and 3-methyl-5-pyrazolone; and a gas generator for automotive airbags wherein the above agent is used. This agent may contain, if required, an oxidizing agent and a binding agent.
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 July 6, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2015.
- 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.