Hypodermic syringe
CA 2096026 C · Owner: Mdc Investment Holdings, Inc. · Inventors: Botich, Michael J.; Halseth, Thor R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hypodermic injection system (7) with a retractable needle (9) wherein the needle (9) retracts within an interior cavity (71) of a syringe plunger (59); so that the needle (9) is safely and confinedly held within the plunger (59) for ease of handling and transport, while remaining safely therein A cylindrical spring housing (21) , has resilient fingers (23) which can capture a coiled spring (15) which biasly, holds a needle holder (11) against the retaining force of the resilient fingers (23), The plunger (59) has a frangible end (65), which, when engaging the resilient fingers (23) under a pre-determined amount of force, dissociate while remaining outwardly tapered shoulders (68) …
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 7, 1990 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 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.