Expired Canadian patentCanada
Use of polyalkylmethacrylate polymer in functional fluids
CA 2603633 C · Owner: Rohmax Additives Gmbh · Inventors: Hyndman, Charles W.; Neveu, Christian D.; Schweder, Roland
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of a polyalkylmethacrylate polymer to improve the air release of a functional fluid.
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 January 28, 2006 and granted August 5, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 28, 2006
GrantedAugust 5, 2014
Term endedJanuary 28, 2026
Patent numberCA 2603633 C
Classification (IPC)C10M145/14
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.