Process and apparatus for detecting substances associated with dust
CA 2251444 A1 · Owner: Wuske, Thomas · Inventors: Mahn, Jessica; Polzius, Rainer; Wuske, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process that is used to detect substances that are associated with dust, the dust that is to be tested is brought together with a solvent in order to elute the substance that is to be detected from the dust. The specific constituents are contained by means of a filter matrix (2) whereas the solvent, and the substances that are either dissolved and/or suspended therein are moved through the filter matrix (2) by capillary action. The solvent and the substances dissolved and/or suspended therein are transferred by capillary action into a reaction matrix that is adjacent to the filter matrix. The substance that is to be detected is indicated by means of a chemical and/or biochemical …
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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 October 21, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2020.
- 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.