Metallization of non-conductors
CA 2069865 C · Owner: Atotech Deutschland Gmbh · Inventors: Bressel, Burkhard; Mahlkow, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for enabling direct metallization of nonconductors. Strongly-adherent insoluble polymeric products are deposited in one process step on the surface of the nonconductor from an acidic aqueous solution (optionally containing a solubilizer) of initially-nonconductive oligomers, monomer/oligomer mixtures, or monomers or mixtures of monomers of five-membered heterocycles, by contact with a non-rinsable insoluble coating containing manganese dioxide which has been adsorbed on the surfaces of the nonconductor from a solution containing permanganates. The electrical conductance of the polymeric products is sufficient to permit deposition of metal on the polymer …
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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 November 27, 1990 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2012.
- 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.