Otto Kristian Sonju

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Trondheim, NO

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Patents Grantslast 30 patents

Information Patent Grant
Geothermal power plant
- Patent number 10,260,778
- Issue date Apr 16, 2019
- GEOVARME AS
- Otto Kristian Sønju
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Method and equipment for heat recovery
- Patent number 9,732,981
- Issue date Aug 15, 2017
- Norsk Hydro ASA
- Erling Naess
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Single stage gaseous fuel burner with low NOx emissions
- Patent number 8,292,615
- Issue date Oct 23, 2012
- Norwegian University of Science and Technology (NTNU)
- Øystein Spangelo
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Gas Burner
- Patent number 6,461,147
- Issue date Oct 8, 2002
- Leiv Eiriksson Nyfotek AS
- Otto K. Sonju
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Ceramic composite material and a lining for metallurgical smelting...
- Patent number 4,846,680
- Issue date Jul 11, 1989
- Elkem A/s
- Per Olav
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Ceramic composite material and a lining for metallurgical smelting...
- Patent number 4,752,218
- Issue date Jun 21, 1988
- Elkem A/s
- Per Olav Nos
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
GEOTHERMAL POWER PLANT
- Publication number 20160245550
- Publication date Aug 25, 2016
- GEOVARME AS
- Otto Kristian SØNJU
- F24 - HEATING RANGES VENTILATING
Information Patent Application
METHOD AND EQUIPMENT FOR HEAT RECOVERY
- Publication number 20140069625
- Publication date Mar 13, 2014
- NTNU Technology Transfer AS
- Erling NAESS
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
Method for Burning of Gaseous and Burner
- Publication number 20090220899
- Publication date Sep 3, 2009
- NTNU Technology Transfer AS
- Øystein Spangelo
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Method and Equipment for Heat Recovery
- Publication number 20080099185
- Publication date May 1, 2008
- Erling Naess
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR