Assignee
NORSK HYDRO AS
NO·391 granted patents·33 pending applications·8,755 citations·filing 1974–2023
Top patents by PatentIndex Score
424 records- 0197US4986597AVehicle space frame and a method for manufacturing of vehicle space frame partsNORSK HYDRO AS·Filed 1989·Granted Jan 22, 1991·104 cites·8 claims
- 0296US6655150B1Method for removing and recovering CO2 from exhaust gasNORSK HYDRO AS·Filed 2000·Granted Dec 2, 2003·193 cites·19 claims
- 0396US4822535AMethod for producing small, spherical polymer particlesNORSK HYDRO AS·Filed 1986·Granted Apr 18, 1989·151 cites·10 claims
- 0495US5945318ARefining oil compositionsNORSK HYDRO AS·Filed 1995·Granted Aug 31, 1999·87 cites·29 claims
- 0595US5698594ATreatment and prevention of risk factors for cardiovascular diseasesNORSK HYDRO AS·Filed 1996·Granted Dec 16, 1997·292 cites·22 claims
- 0695US5656667AFatty acid compositionNORSK HYDRO AS·Filed 1995·Granted Aug 12, 1997·362 cites·63 claims
- 0795US5502077AFatty acid compositionNORSK HYDRO AS·Filed 1992·Granted Mar 26, 1996·441 cites·12 claims
- 0894US6298664B1Process for generating power including a combustion processNORSK HYDRO AS·Filed 1997·Granted Oct 9, 2001·161 cites·19 claims
- 0992US5435393AProcedure and production pipe for production of oil or gas from an oil or gas reservoirNORSK HYDRO AS·Filed 1993·Granted Jul 25, 1995·243 cites·20 claims
- 1091US7456515B2Wind turbine for use offshoreNORSK HYDRO AS·Filed 2004·Granted Nov 25, 2008·47 cites·12 claims
- 1190US11313019B2Method for producing a heat treatable aluminum alloy with improved mechanical propertiesNORSK HYDRO AS·Filed 2016·Granted Apr 26, 2022·3 cites·14 claims
- 1290US6518049B1Lipase-catalysed esterification of marine oilNORSK HYDRO AS·Filed 2000·Granted Feb 11, 2003·58 cites·27 claims
- 1390US6237339B1Process for generating power and/or heat comprising a mixed conducting membrane reactorNORSK HYDRO AS·Filed 1997·Granted May 29, 2001·112 cites·13 claims
- 1490US4889197AHydraulic operated underreamerNORSK HYDRO AS·Filed 1988·Granted Dec 26, 1989·128 cites·11 claims
- 1589US7285153B2Method and equipment for feeding two gases into and out of a multi-channel monolithic structureNORSK HYDRO AS·Filed 2002·Granted Oct 23, 2007·66 cites·18 claims
- 1689US5577796AStructural beam and method of manufacture thereofNORSK HYDRO AS·Filed 1995·Granted Nov 26, 1996·71 cites·40 claims
- 1789US5149820ADeuterated compoundsNORSK HYDRO AS·Filed 1989·Granted Sep 22, 1992·88 cites·1 claims
- 1889US5058266AMethod of making internally finned hollow heat exchangerNORSK HYDRO AS·Filed 1990·Granted Oct 22, 1991·71 cites·13 claims
- 1989US4891275AAluminum shapes coated with brazing material and process of coatingNORSK HYDRO AS·Filed 1986·Granted Jan 2, 1990·62 cites·10 claims
- 2089US4765807AMethod and apparatus for the oxygen enrichment of waterNORSK HYDRO AS·Filed 1986·Granted Aug 23, 1988·57 cites·14 claims
- 2188US6767527B1Method for recovering CO2NORSK HYDRO AS·Filed 1999·Granted Jul 27, 2004·96 cites·8 claims
- 2287US5316206AMethod of joining aluminium membersNORSK HYDRO AS·Filed 1992·Granted May 31, 1994·64 cites·15 claims
- 2385US6334994B1Microporous crystalline silico-alumino-phosphate composition, catalytic material comprising said composition and use of these for production of olefins from methanolNORSK HYDRO AS·Filed 1997·Granted Jan 1, 2002·92 cites·15 claims
- 2485US6204401B1Purifying polyunsaturated fatty acid glyceridesNORSK HYDRO AS·Filed 1998·Granted Mar 20, 2001·54 cites·15 claims
- 2584US6137005AMethod for manufacture of products containing disalts of formic acidNORSK HYDRO AS·Filed 1996·Granted Oct 24, 2000·50 cites·5 claims
- 2684US5961978ATherapeutically useful peptides and peptide fragmentsNORSK HYDRO AS·Filed 1995·Granted Oct 5, 1999·62 cites·138 claims
- 2784US5840190ASurface modified biocompatible membranesNORSK HYDRO AS·Filed 1994·Granted Nov 24, 1998·78 cites·14 claims
- 2884US5540016AStructural beamNORSK HYDRO AS·Filed 1991·Granted Jul 30, 1996·46 cites·15 claims
- 2984US5359957ATurret for drilling or production shipNORSK HYDRO AS·Filed 1992·Granted Nov 1, 1994·35 cites·16 claims
- 3084US4493368AHelical flow heat exchanger having individually adjustable bafflesNORSK HYDRO AS·Filed 1982·Granted Jan 15, 1985·53 cites·8 claims
- 3183US4308176ACatalyst and method for producing said catalystNORSK HYDRO AS·Filed 1980·Granted Dec 29, 1981·37 cites·6 claims
- 3282US7819196B2Method for operating actuator and an actuator device for use in drainage pipe used for producing oil and/or gasNORSK HYDRO AS·Filed 2005·Granted Oct 26, 2010·22 cites·13 claims
- 3382US7617940B2Arrangement related to a separator for the cleaning of such separatorNORSK HYDRO AS·Filed 2006·Granted Nov 17, 2009·6 cites·6 claims
- 3482US6371541B1Energy absorbing deviceNORSK HYDRO AS·Filed 1999·Granted Apr 16, 2002·53 cites·22 claims
- 3582US5934379AMethod and apparatus for detection and prevention of fire hazardNORSK HYDRO AS·Filed 1996·Granted Aug 10, 1999·84 cites·16 claims
- 3682US4147474AMethod and system for transferring liquid mediaNORSK HYDRO AS·Filed 1977·Granted Apr 3, 1979·59 cites·11 claims
- 3782US4049773AProcess for precipitation of aluminum hydroxide from aluminate solutionNORSK HYDRO AS·Filed 1976·Granted Sep 20, 1977·30 cites·10 claims
- 3881US6786952B1Membrane and use thereofNORSK HYDRO AS·Filed 2000·Granted Sep 7, 2004·41 cites·5 claims
- 3980US7453763B2Geophysical data acquisition systemNORSK HYDRO AS·Filed 2004·Granted Nov 18, 2008·51 cites·26 claims
- 4080US5947184AEquipment for continuous casting of metalsNORSK HYDRO AS·Filed 1997·Granted Sep 7, 1999·29 cites·27 claims
- 4180US5678623ACasting equipmentNORSK HYDRO AS·Filed 1996·Granted Oct 21, 1997·29 cites·19 claims
- 4280US5663471AProcedure for synthesis of crystalline microporous silico-alumino-phosphatesNORSK HYDRO AS·Filed 1992·Granted Sep 2, 1997·44 cites·9 claims
- 4380US5413315AInjection equipmentNORSK HYDRO AS·Filed 1994·Granted May 9, 1995·25 cites·13 claims
- 4480US5247970AMethod for filling particulate material into tubesNORSK HYDRO AS·Filed 1992·Granted Sep 28, 1993·63 cites·17 claims
- 4580US5158613ACement slurryNORSK HYDRO AS·Filed 1988·Granted Oct 27, 1992·38 cites·4 claims
- 4680US4986970AMethod for removal of heavy metals, especially cadmium, from phosphoric acid containing solutionsNORSK HYDRO AS·Filed 1989·Granted Jan 22, 1991·40 cites·6 claims
- 4779US7516794B2Pipe separator for the separation of fluids, particularly oil, gas and waterNORSK HYDRO AS·Filed 2003·Granted Apr 14, 2009·33 cites·6 claims
- 4879US7278543B2Device for separating multi-phase fluidsNORSK HYDRO AS·Filed 2003·Granted Oct 9, 2007·37 cites·5 claims
- 4979US6800306B1Gelled feed products, means for making the products and method for manufacture of said productsNORSK HYDRO AS·Filed 2000·Granted Oct 5, 2004·17 cites·11 claims
- 5079US6613384B1Method for manufacturing a membraneNORSK HYDRO AS·Filed 2000·Granted Sep 2, 2003·27 cites·4 claims
Showing the top 50 of 424 patent records by PatentIndex Score.
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