Vaccine containing slow release antigen
CA 1084413 A · Owner: Commonwealth Serum Laboratories Commission · Inventors: Chandler, Howard M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for preparing a vaccine composition which comprises mixing antigenic material with a matrix-forming material, subjecting the mixture thus formed to crosslinking and/or polymerization to form a solid biodegradable matrix containing the antigenic material, and dispersing the thus prepared matrix in a liquid vaccine. Such matrices after injection into animals, are capable of providing delayed, sustained or periodic release of the active ingredients the, type and time of release being dependent on the crosslinking conditions used in manufacture.
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
- Granted August 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 1997.
- 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.