Trash can liner
CA 2071062 C · Owner: Mobil Oil Corporation · Inventors: Freeman, Scott Theodor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trash can liner is disclosed which evenly distributes the load across the sealed bottom portion thereof. The liner includes a body portion which is formed from a tube of coextruded thermoplastic film. The tube includes edge portions which are folded inwardly towards the center line of the tube along first and second fold lines. The tube is also folded along its center line prior to sealing to form a construction including eight overlapping walls of approximately equal width. A pair of heat seals extend through each of the eight overlapping walls at one end of the tube the heat seals being, separated by an unsealed area.
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 June 11, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2014.
- 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.