Easily-openable packaging container
CA 1316129 C · Owner: Takata, Yukio · Inventors: Suzuki, Takanori; Takata, Yukio; Shinohara, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for filling and packaging an article and an apparatus for same. The method comprises filling an article in a container and heat-sealing a lid member to a flange portion of the container. The container has a multilayer structure able to be delaminated. notch is provided in an inner surface layer of the container at a peripheral portion of the flange portion inside a heat seal portion before or after an article is filled in the container and the lid member sealed thereon. The apparatus has notch forming means for this purpose.
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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 2010.
- 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.