Cup lid having improved drink-through opening
CA 2299006 C · Owner: Amhil Enterprises · Inventors: Van Melle, Hugh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable cup lid is provided for placement onto a drinking cup having a substantially circular cup rim which lies substantially in a single plane. The cup lid, comprises a substantially circular and substantially planar top surface and a, downwardly facing cup rim engaging recess formed near the outer periphery thereof. The cup rim engaging recess extends from 300° to 360° around the periphery, and is, defined at its outer side by a substantially circular downwardly depending , apron, at its, inner side by a first downwardly directed recess sidewall and at its top by a , top wall, between the downwardly depending apron and the downwardly directed recess sidewall. The downwardly …
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 February 21, 2000 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2022.
- 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.