Method and compostion for removing organic coatings from a substrate
CA 2417548 A1 · Owner: Kolene Corporation · Inventors: Pilznienski, John F.; Malloy, James C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and composition for removing organic coatings or residues from a substrate is provided, which composition includes an organic carrier of ethanolamines and non-ionic alkylphenol ethoxylate surfactants and mixtures thereof and potassium hydroxide and being free of water. In use the composition is formed by mixing the ethanolamines and the surfactants and adding the potassium hydroxide. The composition is maintained above the boiling point of water in liquid state preferably from about , 225° F to, about 350° F and the workpieces having organic coatings or residues thereon, are, immersed in the heated composition. If the composition is maintained essentially free of water the alkali …
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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 January 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
- 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.