Apparatus for filling and sealing liquid-phased extruded containers and method
CA 2197423 C · Owner: Lindgren, Peter B. · Inventors: Lindgren, Peter B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus (1) method for filling liquid-phased extruded containers (36) comprises injecting the extruded material (3) into a die head (10) forming a tubular shape. The die head is hollow, or bored, from its back end to its front where the extruded material egresses to form the extrudate (pre-container) tube shape. A means for introducing a separable insert (12) through the die head bore (26) permits the insert to be encased within the tube while the thermoplastic material is still in its liquid or molten phase. Pinch rollers (32) seal the tube at ends opposite that of the insert while avoiding the insert while the, line of sealed containers is pulled by the gear rollers (30) through a …
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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 22, 1995 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2017.
- 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
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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.