Single-use syringe
CA 2003803 C · Owner: Kosinski, Anthony J. · Inventors: Kosinski, Anthony J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operable syringe assembly includes a barrel having an inside surface describing a chamber for retaining fluid, an open barrel end, and a distal barrel end having a passageway therethrough in fluid communication with the chamber. A plunger rod includes an elongate body portion, a proximal end and a distal end with a stopper positioned at the distal end. The stopper slidably positioned in fluid-tight engagement in the barrel. A locking element is positioned in the barrel between the plunger rod and the inside surface of the barrel. Locking element includes a proximally and outwardly facing locking barb, a distally and inwardly facing resisting edge and an inwardly facing driving edge. …
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 November 24, 1989 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
- 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.