Hot melt metal working lubricants
CA 1075673 A · Owner: The Lubrizol Corporation · Inventors: Jahnke, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal working operations especially drawing, are, facilitated by applying to the metal a composition which provides lubricity thereto and which melts at about 30-100°C. The composition comprises an ester of a carboxylic acid with, a carboxylic acid or derivative thereof a phosphorus acid, salt and an antioxidant being preferred optional ingredients. The composition may be applied in liquid form and solidifies on cooling to ambient and normal storage temperatures. Prior to application, the composition is preferably heated to a temperature higher than its melting temperature for ease of flow and uniform dispersion thereof onto the metal. In a preferred method of application, a reservoir is …
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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 April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
- 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.