Metalworking with an aqueous synthetic lubricant containing polyoxypropylene-polyoxyethylene- polyoxypropylene block copolymers
CA 1210384 A · Owner: Aluminum Company Of America · Inventors: Laemmle, Joseph T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of metalworking including the step of applying to a metal object a synthetic aqueous lubricant composition. The composition comprises a water-soluble mixture of polyoxypropylene-polyoxyethylene-polyoxypropylene block copolymers, a water-soluble carboxylic acid a water-soluble, alkanolamine and water. The metalworking method preferably includes a step of either hot rolling or cold rolling. The method is especially suitable for use on aluminum and aluminum alloy material.
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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 August 26, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2003.
- 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
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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.