Disposable safety syringe
CA 2047263 C · Owner: Rossi, Roberto · Inventors: Righi, Nardino; Rossi, Roberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable safety syringe which comprises a barrel (1), an injection needle (4) fitted on the fore end of barrel (1), a plunger (6) being slidable in barrel (1) from a syringe-filling utmost retracted position to a syringeemptying forwardmost position, and which is fitted with a manually drivable stem (7) protruding from the rear end of barrel (1), a longitudinally slidable protective sleeve (12) slidably fitted on the outside of barrel (1) so as to be, movable from a retracted rest position in which the needle (4) is exposed, into an advanced safety position in which the protective sleeve (12) extends around the needle (4) so, as to entirely cover the same, and with locking means (23 25) …
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 17, 1991 and granted October 18, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2013.
- 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.