Organoclay thickener compatible with system to be thickened
CA 2122808 A1 · Owner: Rheox International Inc. · Inventors: Nae, Hemi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An organophilic clay thickener for natural oil systems comprising the reaction product of a smectite-type clay and an organic cation in an amount of from about 75% to about 150% of the cation exchange capacity of the smectite-type clay. Said organophilic clay comprising at least one naturally occurring resulting in increased efficiency as a thickener in natural oil systems.
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 May 3, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2016.
- 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.