Integrated lubricant upgrading process
CA 2425899 C · Owner: Exxonmobil Research And Engineering Company · Inventors: Smith, Fritz A.; Carroll, Michael B.; Bixel, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil feedstock (6) is upgraded by hydrocracking and flashing and/or distilling. A distillate fraction (46) boiling in the diesel range is isolated and dewaxed under high pressure by a medium pore molecular sieve. The dewaxed material is then cascaded to a hydrofinishing step where it is contacted with , an aromatics saturation catalyst having a metal hydrogenation function in order to produce diesel fuels having low aromatics content.
Read the whole patent
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 October 10, 2001 and granted August 30, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2023.
- 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.