Method of producing thin, poorly soluble coatings
CA 2367342 A1 · Owner: Lux-Steiner, Martha Christina · Inventors: Lux-Steiner, Martha Christina; Fischer, Christian-Herbert; Muffler, Hans-Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable surface coatings can be produced by sputtering evaporation coating, bath deposition or metal-organic chemical vapor deposition (MOCVD). With these methods it is not always possible to obtain homogeneous coatings which also reach internal surfaces. For the production of ceramic or oxidic layers (CL/OL) on substrates (S) the invention therefore provides that after application (I) and drying (II) of a suitable starting substance (P) the resulting starting-substance layer (PLD) is exposed (III) to a wet reactant gas (RG) to transform said layer into a corresponding hydroxide or complex layer (HL) and then heat treated (IV) for the formation of a ceramic or oxidic layer (CL/OL). …
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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 April 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2022.
- 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
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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.