Stable interferon b-composition and a method of stabilizing interferon b
CA 1209473 A · Owner: Inter-Yeda Ltd. · Inventors: Cymbalista, Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interferon .beta. composition comprises a buffered solution of highly purified interferon .beta. and conventional excipients. The solution is stabilized by the addition of 0.5 to 10% wt/volume of polyvinyl pyrrolidone. By stabilizing the composition in this way, the biological activity of interferon can be maintained for an extended period of time.
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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 August 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 2003.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.