Alkyl ether amine conveyor lubricant
CA 2224968 C · Owner: Besse, Michael E. · Inventors: Person Hei, Kimberly L.; Schmidt, Bruce E.; Gutzmann, Timothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention includes lubricant concentrate and use solution compositions having an amine compound of the formula R1 - O - R2 - NH2, R1 - O - R2 - NH - R3 - H2, and mixtures thereof wherein R1 may be a linear saturated or unsaturated C6-C18 alkyl R2 is a linear, or branched C1-C8 alkyl. The concentrate also comprises an acidulant optionally a stabilizing hydrotrope, and a surfactant. The lubricant use solution resulting from dilution of the concentrate has an amine compound in a concentration ranging from about 10 ppm to 10000 ppm. Also disclosed is a method of lubricating a conveyor system which includes providing a use solution of the lubricant concentrate composition.
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 March 14, 1997 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2019.
- 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.