Expired Canadian patentCanada
Disodium cromoglycate self-propelling compositions
CA 1112567 A · Owner: Fisons Limited · Inventors: Brown, Kenneth
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dispersions or suspensions of lecithin or a sorbitan or sorbitol ester in propellant 12, the dispersions or suspension containing no propellant 11 are described. The use of the dispersions in pressure pack formulations of medicaments is also described.
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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
- Granted November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1978
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112567 A
Classification (IPC)A61K9/12
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.