Compositions and process for dedusting solids- containing hydrocarbon oils
CA 1188499 A · Owner: Exxon Research And Engineering Company · Inventors: Smith, Dean L. Jr.; Merchant, Philip, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Finely divided particulate solids are removed from unconventional whole heavy petroleum crudes heavy, petroleum crude fractions, and residua syncrudes and, syncrude fractions, particularly shale oil and shale oil fractions, by the use of novel surface active agents characterized as an admixture of (I) a surfactant comprised of (A) an ethoxylated or propoxylated ester or, ester constituted or a 1,4-sorbitan skeleton to which at least one and up to three ethoxy, propoxy or mixed, ethoxy-propoxy, and at least one and up to three fatty acid substituents are attached through oxygen to the 2,3,5 and 6 carbon atoms; and preferably this compound (A), or mixture thereof, is further admixed with (B) …
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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
- Granted June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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.