Surface ionization detector for detecting trace amounts of organic molecules
CA 2130975 A1 · Owner: Nacson, Sabatino · Inventors: Nacson, Sabatino
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface ionization detector for detecting organic molecules such as illicit drugs and nonorgano-nitrate explosives includes a heated surface and a collector electrode. A sample containing trace amounts of the organic molecules in ambient air is directed over the heated surface maintained at a temperature in the range of 500°C to 800°C thereby, causing the molecules to decompose into fragments. A polarization voltage between 18V and 24V is applied to ionize the fragments which are then collected by the collector electrode. An electrometer connected to the collector electrode measures the current and a change in the current indicates the presence of ionized fragments, and thereby indicates …
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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 August 26, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2016.
- 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.