Composition of cationic micro-emulsion and its preparation method
CA 2115916 A1 · Owner: Ablestik Laboratories · Inventors: Maegawa, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the present invention cationic particle having two-layer, structure wherein copolymerized resin comprising a specific copolymer is protected with a film of water soluble resin is contained in, aqueous medium. In this way a glossy film can be obtained by, employing the composition of the cationic micro-emulsion; moreover this film is superior in waterproof, weatherproof and the like. This composition of the cationic micro-emulsion is effective as top coat material for painting, sealer and the like.
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 June 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2015.
- 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.