Paint spray booth treatment program for water base and water base blended with oil base paints
CA 2075162 A1 · Owner: Purnell, Deborah L. · Inventors: Purnell, Deborah L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the detackification and coagulation of oversprayed water-borne and mixed water-borne and oil based paint particles in the water collection system of a paint spray booth comprising adding a unitary blend of an inorganic anion and a cationic polymer selected from the group consisting of polydiallyl dimethyl ammonium chloride a condensation product, of dimethylamine plus epichlorohydrin and a condensation product of dimethylamine plus ethylene diamine plus epichlorohydrin.
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 July 31, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2014.
- 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.