Assignee
PETROLEO BRASILEIRO SA
BR·238 granted patents·51 pending applications·5,526 citations·filing 1975–2023
Top patents by PatentIndex Score
289 records- 0196US4846277AContinuous process of hydraulic fracturing with foamPETROLEO BRASILEIRO SA·Filed 1988·Granted Jul 11, 1989·231 cites·3 claims
- 0295US5182792AProcess of electric pipeline heating utilizing heating elements inserted in pipelinesPETROLEO BRASILEIRO SA·Filed 1991·Granted Jan 26, 1993·365 cites·4 claims
- 0393US7531142B2Multifunctional entry device for a downward flow tube reactorPETROLEO BRASILEIRO SA·Filed 2006·Granted May 12, 2009·38 cites·13 claims
- 0493US7112229B2Process for producing biodiesel fuel using triglyceride-rich oleagineous seed directly in a transesterification reaction in the presence of an alkaline alkoxide catalystPETROLEO BRASILEIRO SA·Filed 2003·Granted Sep 26, 2006·75 cites·12 claims
- 0592US7540952B2Catalytic cracking process for the production of diesel from vegetable oilsPETROLEO BRASILEIRO SA·Filed 2006·Granted Jun 2, 2009·65 cites·5 claims
- 0691US7934560B2Free standing riser system and method of installing samePETROLEO BRASILEIRO SA·Filed 2008·Granted May 3, 2011·37 cites·17 claims
- 0790US5282508AProcess to increase petroleum recovery from petroleum reservoirsPETROLEO BRASILEIRO SA·Filed 1992·Granted Feb 1, 1994·274 cites·13 claims
- 0889US7878508B2Compact restictive seal for bearing housingsPETROLEO BRASILEIRO SA·Filed 2010·Granted Feb 1, 2011·14 cites·9 claims
- 0989US4396789AProcess for dehydration of a low molecular weight alcoholPETROLEO BRASILEIRO SA·Filed 1982·Granted Aug 2, 1983·142 cites·3 claims
- 1089US4232179AProcess for preparing ethenePETROLEO BRASILEIRO SA·Filed 1978·Granted Nov 4, 1980·108 cites·12 claims
- 1187US5183581AProcess for the dewaxing of producing formationsPETROLEO BRASILEIRO SA·Filed 1992·Granted Feb 2, 1993·83 cites·8 claims
- 1287US4193963AApparatus for the determination of chemical compounds by chemiluminescence with ozonePETROLEO BRASILEIRO SA·Filed 1977·Granted Mar 18, 1980·69 cites·4 claims
- 1386US7395858B2Process for the selective controlled reduction of the relative water permeability in high permeability oil-bearing subterranean formationsPETROLEO BRASILEIRO SA·Filed 2006·Granted Jul 8, 2008·54 cites·17 claims
- 1486US6544409B2Process for the catalytic oxidation of sulfur, nitrogen and unsaturated compounds from hydrocarbon streamsPETROLEO BRASILEIRO SA·Filed 2001·Granted Apr 8, 2003·56 cites·44 claims
- 1586US6474413B1Process for the reduction of the relative permeability to water in oil-bearing formationsPETROLEO BRASILEIRO SA·Filed 2000·Granted Nov 5, 2002·99 cites·22 claims
- 1685US9199957B22.5-furandicarboxylic acid integrated production processPETROLEO BRASILEIRO SA·Filed 2013·Granted Dec 1, 2015·11 cites·10 claims
- 1785US6103101AProcess for producing lube base oils of high viscosity index and diesel oil of high cetaned numberPETROLEO BRASILEIRO SA·Filed 1997·Granted Aug 15, 2000·88 cites·12 claims
- 1885US6036749AHelical separatorPETROLEO BRASILEIRO SA·Filed 1998·Granted Mar 14, 2000·108 cites·11 claims
- 1984US7897034B2Aviation gasoline formulationPETROLEO BRASILEIRO SA·Filed 2005·Granted Mar 1, 2011·22 cites·3 claims
- 2084US7266261B2Fiber optics differential pressure transducerPETROLEO BRASILEIRO SA·Filed 2005·Granted Sep 4, 2007·28 cites·35 claims
- 2184US6035933AProcess for the thermo-hydraulic control of gas hydratesPETROLEO BRASILEIRO SA·Filed 1997·Granted Mar 14, 2000·103 cites·12 claims
- 2283US7422066B2System for direct vertical connection between contiguous subsea equipment and method of installation of said connectionPETROLEO BRASILEIRO SA·Filed 2005·Granted Sep 9, 2008·39 cites·16 claims
- 2383US5639313AProcess for the thermo-chemical dewaxing of hydrocarbon transmission conduitsPETROLEO BRASILEIRO SA·Filed 1993·Granted Jun 17, 1997·48 cites·6 claims
- 2482US7551420B2Retractable igniterPETROLEO BRASILEIRO SA·Filed 2006·Granted Jun 23, 2009·32 cites·6 claims
- 2582US6626242B2Storable composition and slurries and use of same for cementing oil and gas wellsPETROLEO BRASILEIRO SA·Filed 2002·Granted Sep 30, 2003·31 cites·4 claims
- 2682US4066532AProcess for producing premium coke and aromatic residues for the manufacture of carbon blackPETROLEO BRASILEIRO SA·Filed 1976·Granted Jan 3, 1978·24 cites·3 claims
- 2780US7516795B2Subsea petroleum production system method of installation and use of the samePETROLEO BRASILEIRO SA·Filed 2005·Granted Apr 14, 2009·30 cites·9 claims
- 2880US7504023B2Process for reducing the naphthenic acidity of petroleum oilsPETROLEO BRASILEIRO SA·Filed 2006·Granted Mar 17, 2009·14 cites·11 claims
- 2980US6276017B1Multisize bidirectional scraping devicePETROLEO BRASILEIRO SA·Filed 1999·Granted Aug 21, 2001·46 cites·16 claims
- 3080US5947642AMethod and apparatus for connecting an underwater flexible riser to a structure on the surfacePETROLEO BRASILEIRO SA·Filed 1997·Granted Sep 7, 1999·136 cites·17 claims
- 3180US4269542AJack-up rig for marine drillingPETROLEO BRASILEIRO SA·Filed 1979·Granted May 26, 1981·45 cites·3 claims
- 3279US7251384B2Optical fiber pH sensorPETROLEO BRASILEIRO SA·Filed 2005·Granted Jul 31, 2007·14 cites·24 claims
- 3379US7153414B2Process for the upgrading of raw hydrocarbon streamsPETROLEO BRASILEIRO SA·Filed 2002·Granted Dec 26, 2006·33 cites·26 claims
- 3479US6936227B1Feed-dispersion system for fluid catalytic cracking unitsPETROLEO BRASILEIRO SA·Filed 2000·Granted Aug 30, 2005·43 cites·39 claims
- 3579US5289561ASubsea pipeline system with electrically heated flexible pipelinePETROLEO BRASILEIRO SA·Filed 1991·Granted Feb 22, 1994·71 cites·1 claims
- 3678US7658837B2Process and device to optimize the yield of fluid catalytic cracking productsPETROLEO BRASILEIRO SA·Filed 2005·Granted Feb 9, 2010·14 cites·6 claims
- 3778US4984935AFloating enclosed offshore support structurePETROLEO BRASILEIRO SA·Filed 1987·Granted Jan 15, 1991·40 cites·11 claims
- 3877US7799285B2Stripping apparatus for the gas-solid separation in a fluidized bedPETROLEO BRASILEIRO SA·Filed 2007·Granted Sep 21, 2010·6 cites·13 claims
- 3977US7213607B2Mandrel for a gas lift valvePETROLEO BRASILEIRO SA·Filed 2004·Granted May 8, 2007·20 cites·16 claims
- 4077US7087154B2Apparatus and process for downflow fluid catalytic crackingPETROLEO BRASILEIRO SA·Filed 2002·Granted Aug 8, 2006·24 cites·55 claims
- 4177US5800680ASystem and method for rapid opening of coking vesselsPETROLEO BRASILEIRO SA·Filed 1996·Granted Sep 1, 1998·38 cites·6 claims
- 4276US7744745B2Process for fluid catalytic cracking of hydrocarbon feedstocks with high levels of basic nitrogenPETROLEO BRASILEIRO SA·Filed 2008·Granted Jun 29, 2010·3 cites·26 claims
- 4376US7514657B2Process for reducing the acidity of hydrocarbon mixturesPETROLEO BRASILEIRO SA·Filed 2006·Granted Apr 7, 2009·10 cites·25 claims
- 4476US6079498AMethod and equipment for the flow of offshore oil productionPETROLEO BRASILEIRO SA·Filed 1997·Granted Jun 27, 2000·82 cites·6 claims
- 4575US7867378B2Process for converting ethanol and hydrocarbons in a fluidized catalytic cracking unitPETROLEO BRASILEIRO SA·Filed 2007·Granted Jan 11, 2011·4 cites·7 claims
- 4675US7285515B2Compositions of oil-based biodegradable drilling fluids and process for drilling oil and gas wellsPETROLEO BRASILEIRO SA·Filed 2003·Granted Oct 23, 2007·32 cites·35 claims
- 4775US6743401B2Closed cyclone system having a flow rate distributor and use of samePETROLEO BRASILEIRO SA·Filed 2001·Granted Jun 1, 2004·19 cites·15 claims
- 4875US6415722B1Remote-controlled vehicle for operations inside pipelinesPETROLEO BRASILEIRO SA·Filed 2000·Granted Jul 9, 2002·30 cites·6 claims
- 4973US8366910B2Process for hydroconversion of a mixture of organic oils of different originsPETROLEO BRASILEIRO SA·Filed 2007·Granted Feb 5, 2013·14 cites·11 claims
- 5073US7308165B2Optical transducer and method for the simultaneous measurement of pressure and temperature in oil and gas wellsPETROLEO BRASILEIRO SA·Filed 2005·Granted Dec 11, 2007·15 cites·18 claims
Showing the top 50 of 289 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when PETROLEO BRASILEIRO SA files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →