Low-sulfur fuel
CA 2423799 C · Owner: Exxonmobil Research And Engineering Company · Inventors: Halbert, Thomas Risher; Stuntz, Gordon Frederick; Welch, Robert Charles William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment process involves separating a , catalytically cracked naphtha into at least a light fraction boiling below about 165 ~F and a heavy fraction boiling above about 165 ~F. The light fraction is treated to remove sulfur by a non-hydrotreating method and the , heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
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 30, 2001 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 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.