Method and device for solid phase microextraction and desorption
CA 2079337 C · Owner: Pawliszyn, Janusz B. · Inventors: Pawliszyn, Janusz B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for carrying out solid phase microextraction is a fiber (6) contained in a syringe (4). The fiber can be solid or hollow. The syringe has a barrel (8) and a, plunger (10) slidable within the barrel the plunger having a handle (12) , extending from one end of the barrel. A hollow needle (18) extends from an end (16) of the, barrel opposite to the plunger. The fiber is contained in the needle. When the plung-, er is depressed, the fiber extends beyond a free end (28) of the needle and when the, plunger is in a withdrawn position the fiber is located within the needle. The syringe, protects the fiber from damage. When it is desired to analyze a sample in a bottle, having a …
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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 2, 1991 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2013.
- 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.