Electrolyte compositions
CA 2057199 A1 · Owner: Wild, Malcolm S. · Inventors: Wild, Malcolm S.; Crosby, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition suitable for use in a process for electroplating surfaces with tin, which comprises (a) an alkane sulphonic acid, (b) an aryl sulphonic acid (c) an additive, and (d) a tin source. A composition suitable for use in a process for electroplating surfaces with tin, which comprises (a) an alkane sulphonic acid, (b) a tin source and (c) a reaction product of a sulphonating agent with Bisphenol A.
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 December 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.