Process for delayed coking of coking feedstocks
CA 2002587 C · Owner: Stavropoulos, Napoleon · Inventors: Stavropoulos, Napoleon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing coke from a combined feed. The combined feed is initially provided as a first portion which comprises easily cokable components and a second portion which is essentially free of easily cokable components. The first portion is heated to a temperature lower than that normally employed by a coking heater in a delayed coking process. The second portion is heated to a temperature at which a combination of the first and second portion provides combined feed at coking temperatures. The combined feed is then subjected to coking conditions. The first portion in, one embodiment, may be comprised of a fresh feed (10") and the second portion may be comprised of a coker recycle. …
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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 9, 1989 and granted August 20, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 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.