Adsorptive separation of isopentane and d-methyl branched paraffins from mono-methyl branched paraffins
CA 2024093 A1 · Owner: Uop · Inventors: Volles, Warren K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ADSORPTIVE SEPARATION OF ISOPENTANE AND DI-METHYL BRANCHED PARAFFINS FROM MONO-METHYL BRANCHED PARAFFINS" ABSTRACT, Isopentane and di-methyl branched paraffins are separated from a feed containing same in admixture with dimethyl branched paraffins by contacting the feed with a molecular sieve adsorbent having elliptical pores of 5 to 5.5 Angstroms along the minor axis and 5.5 to 6 Angstroms along the major axis under separation conditions effective to adsorb mono-methyl branched paraffins including, isopentane, to form a mass transfer zone having isopentane concentrated at the edge thereof and to produce a portion of an adsorption effluent enriched in di-methyl branched paraffins; …
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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 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2012.
- 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.