Patent Yard Sign in
Expired Canadian patentCanada

Addition of olefins to cat cracker feed to modify product selectivity and quality

CA 1085765 A · Owner: W. R. Grace Co. · Inventors: Blazek, James J. Sr.; Ritter, Ronald E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Abstract of the Disclosure, A process for increasing the octane content of gasoline recovered from conventional cracking processes by adding C2 to C5 olefins to the feed to the reactor. The olefins may be added separately or mixed with the gas oil feed just before the oil preheat section ahead of the reactor. - 1 -

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

  • Granted September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 4, 1977
GrantedSeptember 16, 1980
Term endedSeptember 16, 1997
Patent numberCA 1085765 A
Classification (IPC)C10G11/04

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedApril 4, 1977Patent grantedSep 16, 1980Term endedSep 16, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.