A sequential stopper
CA 2207460 A1 · Owner: Jansen, Hubert · Inventors: Grimard, Jean Pierre; Jansen, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sequential stopper having structural features for facilitating substantially complete delivery of fluid held within a syringe barrel. The sequential stopper features a stopper body having a cylindrical side wall, proximal and distal ends and one or more, circumferentially-disposed sealing elements thereabout. One of the circumferentially-disposed sealing elements may be located adjacent the proximal end of the stopper body. An elongate hollow chamber is disposed within the stopper body parallel to the longitudinal axis of the stopper body. A pair of longitudinal sealing elements are disposed on the cylindrical side wall of the stopper body and are separated on the sidewall by a distance …
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 June 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 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.