Single use disposable needleless injector
CA 2108326 C · Owner: Prais, A. Wes · Inventors: Alchas, Paul G.; Prais, A. Wes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operable single use needless hypodermic injector includes an elongate housing with a proximal end a distal end, a, longitudinal axis and a hollow bore therethrough. The housing has a reservoir at the distal end with a generally cylindrical chamber for containing an injectable liquid. The chamber has a longitudinal axis axially aligned with the housing longitudinal axis. The chamber has a first open end adjacent the housing with a resilient stopper mounted slidably therein. The reservoir has a distal second end with an orifice which is in fluid communication with the chamber. The resilient stopper serves to seal the chamber and to eject the liquid from the chamber forming a stream at the …
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 October 13, 1993 and granted March 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2015.
- 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.