Vertical pouch machine
CA 2704063 C · Owner: Frieval, Curt · Inventors: Frieval, Curt; Kettner, Brian E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vertical form fill and seal continuous pouch machine includes a forming tube having a cross section area of CA is disclosed. A film tube is continuously formed about the forming tube and fed downward. A horizontal sealing assembly includes at least one pair of opposing sealing bars that make horizontal seals on the film thereby forming pouches. The horizontal seals are formed in a horizontal sealing zone and the vertical distance from a lower end of the forming tube to the center of the horizontal sealing zone is a transition distance that is (in inches) preferably no more than 0.5 multiplied by the cross-section area (in sq inches).
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 April 21, 2005 and granted February 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.