Coating processes
CA 1286554 C · Owner: British Technology Group Limited · Inventors: Nicholson, John W.; Wilson, Alan D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel coating process is provided herein for the preparation of a coherent protective layer on a substrate surface of a body, where the substrate surface comprising elemental metal or an alloy thereof. The process comprises the first step of reacting (i) a compound of a group lA metal effective in aqueous, media to convert a free carboxylic acid group to a carboxylate group with (ii) an aqueous solution consisting of water and a homopolymer of a mono- or polybasic ethylenically unsaturated acid or a copolymer of a mono- or polybasic ethylenically unsaturated acid comprising at least 40 mol % of polymerized unsaturated carboxylic acid residues, the amount of (i) being sufficient to …
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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
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.