Method and kit for detecting explosives
CA 2105447 A1 · Owner: Margalit, Yair · Inventors: Margalit, Yair
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for detecting particular classes of explosives a suspect sample is subjected serially to reagents (1) (2), (3) and (4), in the liquid phase, the reagents after the first being applied only if no color reaction has been obtained in the preceding test while, reagents (2) and (3) only are applied in presence of the preceding reagent(s). (1) is an alkaline solution of a diazotizable aminoaromatic azo-dye precursor (for nitroaromatic explosives). (2) is a strongly acidic reagent containing a nitrate to nitrite ion reducing agent and a diazo-coupler (for organic nitrates and nitramines). (3) is zinc powder suspended in a liquid comprising at least one water-miscible solvent (for …
Read the whole patent
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 2, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 2, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 2015.
- 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.