Method and apparatus for analysis of macromolecular materials by pyrolysis
CA 2074667 A1 · Owner: Womack, Irving F. Ii · Inventors: Shively, Ronald M.; Rierson, Jon S.; Womack, Irving F. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for determining the temperature resolved evolution of pyrolyzate from a sample of a macromolecular material undergoing pyrolysis. The apparatus comprises an oven for pyrolyzing the sample and a plurality of traps in parallel for trapping and holding pyrolyzate until the pyrolyzate can be analyzed for composition. As the pyrolysis temperature in the oven is continuously increased, pyrolyzate associated with a particular temperature band is directed to a particular predetermined trap. Each trap is separately disposed within its own cooling chamber so that each trap can be heated independently allowing sequential, analysis of the pyrolyzate for each temperature band. The …
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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 July 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.