Method and apparatus for trace sample collection
CA 1279207 C · Owner: Weisz-Margulescu, Adam · Inventors: Stott, William R.; Weisz-Margulescu, Adam; Fisher, William H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable plastic cartridge contains three fine lightweight wire mesh collectors, each of phosphor bronze. One collector has an oxidized surface for collecting drug particulates. The other two have surfaces electroplated with zinc to form a rough multi-fissured surface for trapping low volatility vapours. In use a, portion of a warm sample air stream is chilled and passed through the collectors in parallel for sample collection. Simultaneously part of the sample air stream bypasses the chiller and is fed directly into a mass analyzer for real time analysis. Next, both collection and real time analysis are terminated, and each collector is desorbed in sequence with a pulse of hot air …
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
- Granted January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- 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.