Sleeve for beverage cups
CA 2200635 C · Owner: Ivex Corporation · Inventors: Nurse, Robert I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sleeve is provided for a frusto-conical beverage cup configured to fit, around the outside of the cup thus protecting the fingers of the user from excessive temperatures in the case of a hot drink and to provide a measure of insulation for the contents of the cup. The sleeve is an arcuate band of flexible single-face, corrugated material with curved side walls oppositely extending slots adjacent the ends of the band and tabs lying alongside the slots the tabs projecting only part-way, across the width of the band to facilitate the setting up of the sleeve.
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 March 21, 1997 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 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.