Compounds to be used as carriers for active chemical, physical or biological products or other substances
CA 2029929 A1 · Owner: Portas, Abelardo A. · Inventors: Portas, Abelardo A.; Portas, Abelardo A.; De Portas, Graciela I.O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aerosol dispersing composition comprising two co-sprayed components one of which comprises ammonia or a, lower aliphatic monoamine or diamine or a mixture thereof and the other of which comprises acetic acid sulphur, dioxide or a mixture thereof. The particle size of the resulting aerosol suspension can be controlled by varying the proportion of acetic acid to sulphur dioxide.
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 November 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 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.