Splash proof raised vent lid
CA 2017765 C · Owner: Darras, John R. · Inventors: Dart, Robert C.; Darras, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lid for use on a drinking cup is provided having a central horizontal cover portion which has vent means provided therein. The vent means comprise a circular horizontal top portion having, a vent opening therethrough. The top portion has a downwardly depending first wall which has terminal end below the surface of the cover portion. An upwardly extending second wall merges with the terminal end of the first wall and extends upwardly therefrom in an outwardly spaced apart position respect thereto so as to merge with the cover portion of the lid. A plurality of spaced apart ribs connect the first wall and the second wall so as to cooperate therewith the form downwardly depending arcuate …
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 May 29, 1990 and granted April 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2012.
- 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.