Foam in bag packaging system for manual use
CA 2286222 C · Owner: Davlin, Anthony Orkin · Inventors: Davlin, Anthony Orkin; Sperry, Laurence Burst; Kannankeril, Charles P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foam in bag cushion precursor, is disclosed that is particularly useful for manual operation. The cushion precursor comprises a bag (40) formed of two sheets of flexible plastic film material closed on all four side edges; a frangible seal that defines separate interior cells in a portion of the bag; a first foam precursor composition in one of the interior cells (50); and a second foam precursor composition in another of the interior cells (51). One of the cells has a nonfrangible seal wall (41, 42) other than one of the side edges for directing the contents of the cell to mix with the contents of the other cell before the mixed contents enter the remaining portion of said bag.
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 13, 1998 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2020.
- 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.