Medical syringe
CA 2235957 A1 · Owner: Younkes, Williams E. · Inventors: Younkes, Williams E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A medicinal syringe includes a plunger (16) with a non-integral plunger stick (30), and the plunger is completely contained within the syringe barrel (11). A plunger stick (30) may be detachably attached to the plunger (16) for transporting fluid into and out of the syringe. The syringe is further adapted for use with a pumping mechanism (40) having an integral plunger. The pumping mechanism (40) may positively connect with the plunger (16) to prevent inadvertent plunger motion and consequent loss of medicine. The syringe may be partially or completely hermetically sealed by applying a membrane (270) across its distal end to insure sterility.
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 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 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.