Easily openable sealed container
CA 1297054 C · Owner: Yoshimoto, Mamoru · Inventors: Yoshimoto, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An easily openable sealed container comprising a lid and a main body having at least a sealing layer and an adjacent layer beneath the sealing layer wherein, the main body and the lid are sealed at a part of the flange, characterized in that the sealing layer of the main body at the flange has a thickness of 10-70 µ the, lamination strength between the sealing layer and the adjacent layer of the main body at the flange is 300- 2,000 g/25 mm, and the sealing strength between the lid and the sealing layer of the main body at the flange is larger than the lamination strength between the sealing layer and the adjacent layer of the main body at the flange, and further characterized in that the …
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
- Granted March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
- 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.