Process for producing nickel-plated mouldings
CA 2128022 A1 · Owner: Burkhart, Bernd · Inventors: Burkhart, Bernd; Tschang, Chung-Ji; Dung, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Nickelized shaped articles are produced by electrodeposition of nickel from aqueous acidic baths containing as essential constituents one or more nickel salty, one or more inorganic acids and at least two brighteners by using as brightener a mixture of, A) from 2 to 98% by weight of one or more cyclic N-allylammonium or N-vinylammonium compoundo I (I), where the nitrogen atom is part of a pyridine quinoline or isoquinoline ring system which may additionally carry one or two C1- to C4-alkyl substituents or halogen atoms, R1, R3 and R4 are each hydrogen or C1- to C4-alkyl R2 is hydrogen or methyl, m is from 0 to 4 n is from 1 to 4, and, X? is an n-valent inorganic or organic anion which …
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 January 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2015.
- 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.