Pail closure
CA 2191149 C · Owner: Sturk, Ronald J. · Inventors: Sturk, Ronald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure for a lid of a pail, especially a paint pail. The closure has a threaded neck extending from said lid and encompassing an annular orifice with an internal annular ring circumferentially located therein. A removable annular plug located is within the orifice and retained therein by an interference fit. A cap fits on the threaded neck, and contacts the plug to urge the plug into interference fit with the annular ring.
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 25, 1996 and granted February 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2018.
- 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.