Zeolite composition for use in olefinic separations
CA 2003740 A1 · Owner: Exxon Research And Engineering Company · Inventors: Kantner, Edward; Savage, David W.; Bellows, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improved zeolite composition for a separation process for the adsorption-desorption of olefin mixture or n-olefin n-paraffin mixtures wherein the zeolite is particularly a neutral high-silica molecular sieve. Preferred hydrocarbon feeds for the present separation process are C9 to C19 distillates derived via the thermal cracking of petroleum residua or mixtures of n-olefins and branched chain olefins Such distillates, e.g. light FLEXICOKER and FLUID-COKER gas oils contain 1-n-olefins and n-paraffins as the main types of component and minor components of branched olefins and paraffins as well as aromatic hydrocarbons and sulfur compounds. Mixtures mostly …
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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 November 23, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2011.
- 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.