Expired Canadian patentCanada
Injection solution containing choline theophyllinate
CA 1253078 A · Owner: Asche Aktiengesellschaft · Inventors: Loebel, Klaus-Dieter
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous injection solution contains 1-25% by weight of 2-hydroxy-N,N,N-trimethyl-ethanaminium salt of 3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione (1 : 1) and based on this salt, 5-8% by weight of propionic acid.
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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 April 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 25, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1985
GrantedApril 25, 1989
Term endedApril 25, 2006
Patent numberCA 1253078 A
Classification (IPC)A61K47/00 +2 more
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.