Stabilizers for lyophilized vaccines
CA 2274755 A1 · Owner: Volkin, David B. · Inventors: Volkin, David B.; Burke, Carl J.; Sheu, Su-Pi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vaccine stabilizers, vaccine formulations and lyophilized vaccines with enhanced thermostability are disclosed. The vaccine formulations comprise an increased amount of a 6-carbon polyhydric alcohol (such as sorbitol) an , increased amount of a disaccharide (such as sucrose) and an amount of a physiologically active buffer to adjust the pH from about 6.0 to about 7Ø
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 December 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2019.
- 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.