Detergent compositions with elevated viscosity
CA 2010787 C · Owner: Balzer, Dieter · Inventors: Balzer, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous detergent compositions containing a) 5 to 30 wt.% of a carboxymethylated ethoxylate of Formula (I), R-O-(C2H4O)n CH2COOM (I) in which R is a monounsaturated or polyunsaturated branched or unbranched aliphatic group with 10 to 22 carbon atoms, n is an integer of 1 to 10 and M is an, alkali metal, alkaline earth metal ammonium, or, alkylammonium ion;, b) 0 to 20 wt.% of a carboxymethylated ethoxylate of Formula II, R'-O-(C2H4O)m CH2COOM' (II) in which R' is a saturated, branched or unbranched aliphatic group with 10 to 22 carbon atoms or an, alkylaromatic group with 8 to 18 carbon atoms in the alkyl group, m is an integer of 1 to 10, and M' is an alkali metal, alkaline earth metal, …
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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 February 23, 1990 and granted May 25, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 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.
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.