Small particle analysis of laser induced incandescence
CA 2380735 A1 · Owner: Gulder, Omer L. · Inventors: Liu, Fengshan; Gulder, Omer L.; Snelling, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The laser-induced incandescence (LII) to analyze characteristics of submicron sized particles is described. LII is recognized as a good tool for determining the, characteristics of small particles in a gas e.g. volume fraction, particle , size, and specific surface area. It uses the fact that transient cooling is dependent on the, specific surface area of the particle which is related to diameter of the , particle. In LII, particles are heated by a pulsed laser light beam to a temperature where incandescence from the particles can be distinguished from ambient light. The surface temperature of particles and their volume fraction governs the incandescence. The temperature decay is …
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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 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2024.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.