Sizing dispersion
CA 2446338 A1 · Owner: Holmberg, Krister · Inventors: Mohlin, Kristina; Leijon, Haekan; Holmberg, Krister
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention refers to an essentially water-free sizing composition and an aqueous sizing dispersion comprising a sizing agent a non-ionic , surfactant, an anionic surfactant and a monohydric alcohol. The invention also relates to a method for producing an aqueous dispersion comprising the above components and the use of the dispersion for surface and stock sizing.
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 May 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2024.
- 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.