Method of packaging solvent or water based formulations to reduce skinning
CA 2349385 A1 · Owner: Van Dyk, Antony Keith · Inventors: Gooch, Colin; Van Dyk, Antony Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to packaging water or solvent based formulations, in particular to those formulations which are prone to skinning. The invention comprises a container (1) that is adapted to contain such a formulation (4) in which an anti-skinning layer (6) is located between at least a portion of an internal surface of the container (1) or a lid (5) and the formulation (4).
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 November 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2021.
- 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.