Buffered polyol-hormone mixture for use in chronic parenteral hormone administration
CA 1252717 A · Owner: The Regents Of The University Of Minnesota · Inventors: Wigness, Bruce D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preventing the precipitation of proteins such as hormone preparations, within drug delivery systems that depend on the fluidity of the infusate for proper function while extending and maintaining the biological activity of the protein during its period of storage in the drug delivery system. A polyol, such as glycerol, is mixed with the protein solution prior to the introduction of the solution into the drug delivery system. The polyol is added in amount between about 10 and 90% by volume sufficient to prevent precipitation of the protein during long-term storage in the drug delivery device. A physiologically compatible buffer system in concentration between about 1 mMolar and …
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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 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 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.
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.