Aqueous compositions for visual inspection and cleaning of metallic surfaces
CA 1279243 C · Owner: Geke, Juergen · Inventors: Geke, Juergen; Zange, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to aqueous compositions containing one or more components selected from each of the groups comprising corrosion inhibitors carboxylic acids, glycerol and derivatives alcohols and polyethylene glycols, respectively and tensides, which aqueous compositions are characterized in that they contain alkanolamines as the organic corrosion inhibitors, cinamic acid and/or linear or branched aliphatic carboxylic acids or aromatic carboxylic acids as the carboxylic acids, glycerol and/ or derivatives dihydric, alcohols and/or polyethylene glycols as the alcohols cationic, and/or nonionic tensides as the tensides and optionally, W -active ingredients, nonferrous metal inhibitors …
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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 January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 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.