Liquid containing and dispensing package
CA 2239947 A1 · Owner: Graham, Paul R. · Inventors: Haffner, Eugene F.; Struble, Douglas S.; Mousseau, Carlton R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combined drain back, spout and plastic container includes a plastic container having a body and a finish. The finish has an axial portion and an internal annular land. A drain back spout comprising an outer annular wall and an integral spout connected to the outer wall and the outer annular wall of the spout and the container are spin welded along the annular land. The annular land is machined before spin welding. A method of making a combined drain back, spout and plastic container includes forming a plastic container having a body and a finish having an axial portion a first internal annular land and a second annular land on the axial portion of the finish. The drain back spout is …
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 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2020.
- 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.