Method for separating substances
CA 2498040 A1 · Owner: Katayanagi Institute · Inventors: Hiratsuka, Atsunori; Yano, Kazuyoshi; Koide, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for migrating a substance to be analyzed which comprises the , following steps: a) a step of adding the substance to a migration medium carried on a base material having a surface to be contacted with the migration medium which has been covered with a polymer film and b) a step of applying a , migration pressure to the resultant migration medium; and a device for practicing the method. The method allows the control of various properties of the surface of a base material to be contacted with a migration medium. For example, by utilizing a plasma polymerization a film being uniform in its , thickness and quality can be formed on the surface of a base material having an …
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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 September 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2025.
- 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.