Foldback cup lid having comfortable drinking characteristics
CA 2187382 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 covering the open end of a beverage cup, especially a hot drinks cup for beverages such as coffee. The cup lid is a foldback lid, whereby an opening is formed in the lid by lifting and tearing the material of the cup lid at a designated portion of the rim thereof, then peeling back the drink-through portion of the lid with the, edges of the drink-through portion of the lid being defined by an orientation grain in the lid caused by extrusion of the sheet material from which it is formed. Two additional tab portions are formed into the rim of the lid one, at either side of the position where the grasp tab is located so as to present, forwardly extending …
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 October 8, 1996 and granted June 22, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.