Aqueous electroplating bath and method for electroplating tin and/or lead
CA 1308057 C · Owner: Deresh, Lev · Inventors: Kelly, William R. Iii; Deresh, Lev
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tin, lead or tin-lead alloy electroplating baths producing little or no foam during electroplating even, at conditions of high-speed plating using high current densities and or vigorous bath circulation are disclosed, comprised of tin and/or lead salts of alkane sulfonic acids, free alkane sulfonic acid, brightening agent a, defoaming agent comprised of silicone and silica and/or a silicate in polypropylene glycol, a first nonionic surfactant consisting of an ethoxylated arylphenol and a second nonionic surfactant consisting of an ethoxylated short-chain alcohol.
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
- Granted September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
- 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.