Expired Canadian patentCanada
Composition and method for coke retardant during hydrocarbon processing
CA 1255490 A · Owner: Reid, Dwight K. · Inventors: Reid, Dwight K.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and composition are disclosed for use in inhibiting the formation and deposition of coke on surfaces during the elevated temperature processing of hydrocarbons, by addition to the hydrocarbon of boron or a boron compound.
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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 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 17, 1984
GrantedJune 13, 1989
Term endedJune 13, 2006
Patent numberCA 1255490 A
Classification (IPC)C10G9/12 +2 more
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.