Multilayer hollow plastic article
CA 2299015 A1 · Owner: Hehl, Karl · Inventors: Hehl, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multilayer hollow plastic article, in which the individual layers are produced in defined mould cavities by injection moulding, has a neck ring (10h). Due to the fact that the neck ring (10h) has a recess (10g) in which at least one of the middle layers (62) is accommodated and limited in the direction of the neck ring (10f) (sic), it is also realized in the injection moulding in successive layers that material of the subsequent layers is arranged reliably below the neck ring in the plastic article.
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 February 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2022.
- 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.