Vacuum distillation of a petroleum product
CA 2194668 C · Owner: Abrosimov, Alexandr Alexeevich · Inventors: Tsegelsky, Valery Grigorievich; Kochemasov, Alexandr Mikhailovich; Kochergin, Ivan Alexandrovich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The proposed vacuum distillation process involves dividing the liquid product fed into a vessel under a vacuum into a steam/gas phase and at least one liquid fraction removal of the steam/gas phase from the vessel using a vacuum-producing device, and subsequent division of the steam/gas phase into a gas and a liquid phase by condensation directly in the vacuum-producing device. A portion of the liquid phase is used as a liquid working medium for the vacuum-producing device. The proposed vacuum distillation facility-producing device which includes a jet blower separator and pump, these elements being interconnected by pipes.
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 August 19, 1994 and granted September 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2016.
- 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.