Closure for plastic tube
CA 2253303 A1 · Owner: Kuhn, Hans · Inventors: Kuhn, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Plastic tubes are disclosed, in particular those with a locking mechanism which consists of a locking cam (110) and a locking recess (30) for ensuring a reliable engagement of the cap of the tube with the tube. Also disclosed are plastic tubes with a sealing strip (300) designed on the cap (100) of the tube and which according to the invention has certain preferred embodiments.
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 April 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 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.