Assignee
PETRO CANADA INC
CA26 patents
Top patents by PatentIndex Score
US5755955AMay 26, 1998
Hydrocracking of heavy hydrocarbon oils with conversion facilitated by control of polar aromatics
PETRO CANADA INC98 citations96
US6004453ADec 21, 1999
Hydrocracking of heavy hydrocarbon oils with conversion facilitated by recycle of both heavy gas oil and pitch
PETRO CANADA INC58 citations94
US4963247AOct 16, 1990
Hydrocracking of heavy oil in presence of ultrafine iron sulphate
PETRO CANADA INC95 citations94
US4788852ADec 6, 1988
Metering choke
PETRO CANADA INC77 citations93
US6790386B2Sep 14, 2004
Dielectric fluid
PETRO CANADA INC24 citations91
US6517706B1Feb 11, 2003
Hydrocracking of heavy hydrocarbon oils with improved gas and liquid distribution
PETRO CANADA INC24 citations91
US5972202AOct 26, 1999
Hydrotreating of heavy hydrocarbon oils with control of particle size of particulate additives
PETRO CANADA INC49 citations91
US4969988ANov 13, 1990
Antifoam to achieve high conversion in hydroconversion of heavy oils
PETRO CANADA INC81 citations91
US4652385AMar 24, 1987
Lubricating oil compositions containing novel combination of stabilizers
PETRO CANADA INC34 citations89
US6410488B1Jun 25, 2002
Drilling fluid
PETRO CANADA INC47 citations87
US5787050AJul 28, 1998
Well test imaging
PETRO CANADA INC30 citations85
US5548563AAug 20, 1996
Well test imaging
PETRO CANADA INC23 citations85
US5284509AFeb 8, 1994
Method for producing superior quality paving asphalt and product prepared therefrom
PETRO CANADA INC25 citations84
US4999328AMar 12, 1991
Hydrocracking of heavy oils in presence of petroleum coke derived from heavy oil coking operations
PETRO CANADA INC19 citations82
US4923838AMay 8, 1990
Process for preparing an iron-coal slurry catalyst for hydrocracking heavy oils
PETRO CANADA INC19 citations76
USD291535SAug 25, 1987
Bottle
PETRO CANADA INC10 citations73
USD402771SDec 15, 1998
Service station canopy
PETRO CANADA INC9 citations70
US5124057AJun 23, 1992
Synergistic antioxidant system for severely hydrocracked lubricating oils
PETRO CANADA INC10 citations70
USD399750SOct 20, 1998
Combined bottle and cap
PETRO CANADA INC6 citations65
USD398850SSep 29, 1998
Ridge design for a bottle
PETRO CANADA INC7 citations65
USD391646SMar 3, 1998
Service station canopy
PETRO CANADA INC3 citations59
USD382070SAug 5, 1997
Fuel pump station
PETRO CANADA INC4 citations59
US4664294AMay 12, 1987
Inventory reduction by displacement
PETRO CANADA INC13 citations59
US5695555ADec 9, 1997
Method for the production of improved paving asphalt and product prepared therefrom
PETRO CANADA INC5 citations46
US7048045B2May 23, 2006
Gas lift apparatus for a well
PETRO CANADA INC2 citations44
US6432189B1Aug 13, 2002
Antistatic composition and method of using same
PETRO CANADA INC0 citations33