Infrared emission detection
CA 1332204 C · Owner: Research Corporation Technologies, Inc. · Inventors: Hudson, M. Keith; Busch, Kenneth W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The means and method for observing infrared emission from excited molecules in samples of interest was investigated. Over the wavelength interval from 1 to 5 µm two strong emission bands were observed with a PbSe detector when organic compounds were introduced into an hydrogen/air flame. The band at 4.3 µm (2326 cm-1) was due to the asymmetric stretch of carbon dioxide while the band at 2.7 µm was due to both water and carbon dioxide emission. The carbon dioxide emission at 4.3 µm was found to be most intense at the tip of the flame, and was found to increase with the amount of organic compound introduced into the flame. For chromatographic application an optical filter, was used to isolate …
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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
- Granted October 4, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 4, 2011.
- 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
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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.