A tea bag
CA 2515329 A1 · Owner: Christensen, Kurt Christian · Inventors: Christensen, Henrik Kurt; Christensen, Kurt Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tea bag package comprising a triangular envelope (1) having first and second opposite flaps (3; 4) connected to each other along first and second sides (8; 9) of the triangle but not along the third side (7) and furthermore having a third flap (5) connected at the third side (7) to the first flap (3) and via a folding line (7') foldable between a first position in which the third side (7) is open and a second position in which the third side (7) is closed so that the three flaps (3; 4; 5) together define a closed chamber. The tea bag package furthermore comprises a tea bag (2) disposed in the chamber and a string (18) attached to a corner of this tea bag (2) and running through a …
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 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2025.
- 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.