A multiphase cleaning composition containing naphthalene sulfonic acid/formaldehyde condensate
CA 2292436 A1 · Owner: Soldanski, Heinz-Dieter · Inventors: Noglich, Juergen; Kuech, Stefanie; Soldanski, Heinz-Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Naphthalene sulfonic acid/formaldehyde condensates may be used (i) in a liquid multiphase cleaning composition with at least two continuous phases which contains at least one aqueous phase I and a non-aqueous liquid phase II immiscible with this aqueous phase and which can be temporarily converted into an emulsion by shaking (ii) in a composition for, cleaning hard surfaces to reduce the rain effect and/or the film effect (iii) , in, a process for reducing the rain effect and/or the film effect on a hard surface treated with a liquid cleaning composition the surface being, treated with a liquid cleaning composition in concentrated or diluted form containing at least one naphthalene sulfonic …
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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 December 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2021.
- 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.