Process and apparatus for forming the edge of containers of synthetic thermoplastic material
CA 2031798 A1 · Owner: O.M.V. Spa · Inventors: Padovani, Pietro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for forming the edge of containers of synthetic thermoplastic material which are open at the top and terminate in an outer upwardly arched and downwardly extending flange comprises the following stages, which can be repeated cyclicly: feeding from one or more stacks of, containers; heating the flanges; removal of at least the top container on each stack from the remainder; transfer of the top containers; positioning of these within a female mould; forming and final stabilisation of the edges by closing the male and female mould; expulsion of the edged containers from the female mould into a stacking channel; cooling of the female moulds before other containers for …
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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 December 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2012.
- 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.