Process for the recovery of disproportionation reaction products
CA 2383312 A1 · Owner: Chen, Ye-Mon · Inventors: Salter, James A.; Chen, Ye-Mon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for producing aromatic dicarboxylic acids which includes a disproportionation reaction, a process for separating the disproportionation product solids from the reaction medium said solids exiting said , disproportionation reactor in a liquid/solid slurry at elevated pressure which comprises: a) directing said reactor effluent in said liquid/solid slurry through a fluidic valve using a second injection of liquid reaction medium to control the flow of reactor effluent, b) thereafter directing said reactor effluent into a pressure letdown section where the liquid/solid slurry is accelerated, causing pressure to drop and the liquid to flash c) thereby , gradually flashing …
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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 August 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2022.
- 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.