Improvements in filling cartons
CA 2438897 A1 · Owner: Mckay, John Allen · Inventors: Mckay, John Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packaging system and device for paperboard cartons having closure flaps which extend across, and seal the carton opening when filled with articles. The flaps which are , prone to distortion, are, treated with a minor amount of water which reverses the distortion and allows the articles to be, successfully inserted through the opening and into the carton.
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 August 27, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 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.