Canadian application, no grantCanada
Novel aromatic and aliphatic sulfonates and properties and applications thereof
CA 2228430 A1 · Owner: Rasheed, Khalid · Inventors: Rasheed, Khalid
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to novel alkyl glyceryl ether disulfonate compositions (ADEDS), alkylphenol polyethoxy sulfate-sulfonates and , ethoxylated alkyphenol sulfonates and novel methods of preparation and uses thereof.
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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 May 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 27, 1997
GrantedNo grant recorded
Term endedMay 27, 2017
Patent numberCA 2228430 A1
Classification (IPC)C07C309/42 +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.