Cleaning composition for aluminum containing borates
CA 1057631 A · Owner: Xerox Corporation · Inventors: Angelini, Dominic J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for cleaning and removing oxide layers from aluminum or aluminum alloy surfaces involves contacting the surface with a cleaning bath at a temperature up to about 90°C. for a period of not less than ? minute and then washing the treated surface. The cleaning bath comprises about 0.5% to 15% by weight of least one component providing carbonate ions about 0.5%, to 15% by weight of at least one component providing borate ions, up to about 1% by weight, and preferably 0.1% to 1% by weight of at least one surfactant the balance of, the bath comprising preferably deionized water or an alcohol solution including a straight or branched lower carbon alcohol.
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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 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.