A single dose vaccination system
CA 2106952 C · Owner: Thiel, William James · Inventors: Thiel, William James; Barr, Ian George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a pharmaceutical or veterinary implant, which when parenterally administered releases a pulse of at least one biologically active material at a controllable time interval after implantation. The implant comprises the biologically active material; an excipient comprising at least one water soluble material and at least one water insoluble material; and a polymer film coating adapted to rupture at a predetermined period of time after implantation and, wherein the excipients and polymers are biocompatible. The biologically active material is selected from the. group consisting of antigens antibodies, hormones, growth promotants antibiotics, nutrients, minerals and, …
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 March 25, 1992 and granted January 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2014.
- 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.