Alkyl glycoside surfactant paste
CA 2095933 A1 · Owner: Weuthen, Manfred · Inventors: Eskuchen, Rainer; Schulz, Paul; Weuthen, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A b s t r a c t, A stabilized surfactant paste Water-based surfactant pastes, more particularly those containing nonionic surfactants of the alkyl glycoside type, are effectively stabilized against microbial infestation if, after oxidative bleaching to eliminate alkalisensitive colour bodies, they are adjusted to a pH value of at least 11 by addition of alkaline substances.
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 November 4, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2013.
- 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.