Tin, lead, or tin-lead alloy plating bath
CA 1305941 C · Owner: Obata, Keigo · Inventors: Okada, Yukiyoshi; Okuhama, Yoshiaki; Yoshimoto, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tin, lead, or tin-lead alloy plating bath comprising, as essential ingredients, an alkali metal salt of an aliphatic or aromatic sulfocarboxylic acid of the general formula, or , wherein R is a C1-4 hydrocarbon radical M1 is a hydrogen, atom or alkali metal atom M2 is an alkali metal atom, and, X1 and X2 are each a hydrogen atom OH, COOZ, or SO3Z, (where Z represents a hydrogen atom or alkali metal atom) and a soluble divalent tin compound and/or a lead compound, at a pH of 3 to 8.5.
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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.