Expired Canadian patentCanada
Hydrophobically modified polycarboxylate polymers utilized as detergent builders
CA 2020704 C · Owner: Ablestik Laboratories · Inventors: Leighton, John C.; Iovine, Carmine P.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides water soluble and water dispersible hydrophobically modified polycarboxylate polymers which are useful as detergent builders and detergent compositions utilizing these novel polymers as builders.
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 July 6, 1990 and granted October 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1990
GrantedOctober 11, 1994
Term endedJuly 6, 2010
Patent numberCA 2020704 C
Classification (IPC)C08F218/08 +2 more
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.