Apparatus for and method of collecting trace samples for analysis
CA 2246550 C · Owner: Barringer Research Limited · Inventors: Davies, John Henry; Danylewych-May, Ludmila
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand-held sampling apparatus and method are provided. The apparatus has a handle (12), a head (16) connected to the handle (12) and a mechanism for retaining a substrate (45) on the head (16). The substrate (45) is preferably a sheet-form flexible substrate which is mounted so as to present a collection portion thereof for collection of a sample. The substrate is preferably of a dimension so as to be readily fitted into the inlet portion of an analyzer. The apparatus enables an area to be sampled quickly and efficiently while , keeping a user's hands away from the surface and this enables otherwise , inaccessible areas to be sampled. It does not require any intermediate transfer …
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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 3, 1997 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2019.
- 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.