Thermosyphonic reaction of oxygen with isobutane and reactor
CA 2087077 A1 · Owner: Texaco Chemical Company · Inventors: Cowley, Roderick Spencer; Kinzler, Duane Darrell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
THERMOSYPHONIC REACTION OF OXYGEN, WITH ISOBUTANE AND REACTOR (Docket No. 80,805-F), ABSTRACT OF THE DISCLOSURE A method and apparatus for continuously conducting an exothermic chemical reaction between a reactant feedstock such as isobutane and a chemical reactant such as oxygen wherein a circulating stream of the reaction mixture continuously flows up an upstanding draft tube coaxially mounted in a closed upstanding cylindrical reactor and then down the annulus between the cylindrical reactor and the draft tube to establish circulatory motion, and wherein the circulatory motion is thermosyphonically maintained by charging oxygen adjacent the bottom of the draft tube for exothermal …
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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 January 11, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 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.