Ampule having a fracturing outlet end, a swellable piston and a breakable end for gaining access to the piston
CA 2042988 A1 · Owner: Schlosser, Mark S. · Inventors: Schlosser, Mark S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A positive displacement ampule for storing a fluid therein and dispensing the fluid therefrom. The ampule includes an elongate vessel for storing the fluid having a large diameter base portion at one end thereof joined to a small diameter stemportion at the other end thereof a piston disposed in the vessel at the base end thereof for forcing the fluid from the vessel and a push rod for fracturing the base end of the vessel and pushing the piston so as to pump the fluid from the vessel after the stem thereof has been fractured. The stem and the base of the vessel have weakened areas which permit the fracturing thereof The positive displacement ampule is …
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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
- Filed May 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2013.
- 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.