Aqueous lubricant solutions based on fatty alkyl amines
CA 2004544 C · Owner: Preibsch, Wolfgang · Inventors: Weber, Frank; Preibsch, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an aqueous lubricant solution based in part on a particular group of fatty alkyl amines which aqueous solution is, especially suitable for use as a belt lubricant for the lubrication of conveyor belts for bottles. The aqueous lubricant solutions in accordance with the present invention exhibit excellent clouding behavior and very good gliding action.
Read the whole patent
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
- Filed December 4, 1989 and granted January 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2011.
- 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.