Non-reusable syringe
CA 2021249 A1 · Owner: Sempere Escudero, Philippe · Inventors: Sempere Escudero, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
EXTRACT, A non-reusable syringe characterized by the provision on the inner surface of the syringe cylinder of a successive series of reliefs on the internal diameter, comprising a first relief immediately at the mouth of the plunger entry this having, a conicity at entry and a flat retaining step a, second relief in the proximity of the extremity of the cylinder which also consists of a conical entry followed by a flat retention step, acting to retain the piston head once utilized and finally a third zone in conical form and separated from the second above mentioned zone by a safety zone which is capable of lodging the piston head after the syringe has been used the retention being by a …
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 July 16, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2012.
- 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.