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Patents Grants
last 30 patents
Information
Patent Grant
Method of attaching tubes in a tube plate in a heat exchanger
Patent number
4,897,908
Issue date
Feb 6, 1990
ASEA-STAL AB
Ragnar Henriksson
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method of operating a gas turbine unit
Patent number
4,893,466
Issue date
Jan 16, 1990
Asea Stal AB
Roland Egnell
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Method in fluidized bed combustion
Patent number
4,860,693
Issue date
Aug 29, 1989
Asea Stal AB
Goran Jarvstrat
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for manufacturing metallic products from powder by hot isost...
Patent number
4,855,103
Issue date
Aug 8, 1989
Asea Stal AB
Ragnar Ekbom
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Fluidized bed power plant with bed material crusher
Patent number
4,848,276
Issue date
Jul 18, 1989
ASEA-STAL AB
Roine Brannstrom
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Method in producing a molding of an iron alloy
Patent number
4,820,484
Issue date
Apr 11, 1989
Asea Stal AB
Ragnar Ekbom
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Power plant with combustion of a fuel in a fluidized bed
Patent number
4,805,405
Issue date
Feb 21, 1989
ASEA Stal AB
Arne Jonsson
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Pressure-reducing device for particulate material
Patent number
4,802,796
Issue date
Feb 7, 1989
ASEA Stal AB
Roine Brannstrom
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of reducing the content of nitrogen oxides in multiple bed c...
Patent number
4,782,771
Issue date
Nov 8, 1988
Asea Stal AB
Jorgen Bergkvist
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Pneumatic conveying system with directional change of a gas/particu...
Patent number
4,767,243
Issue date
Aug 30, 1988
ASEA Stal AB
Roine Brannstroom
C21 - METALLURGY OF IRON
Information
Patent Grant
Power plant with a combustion chamber with combustion in a fluidize...
Patent number
4,730,452
Issue date
Mar 15, 1988
Asea Stal AB
Bert Kallman
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Plant for the combustion of particulate fuel in a fluidized bed
Patent number
4,655,147
Issue date
Apr 7, 1987
Asea Stal AB
Roine Brannstrom
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Method and apparatus for activating fluids
Patent number
4,650,413
Issue date
Mar 17, 1987
ASEA Stal AB
Mats Olsson
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Method of drying granular fuel in a fluidized bed combustion plant...
Patent number
4,640,205
Issue date
Feb 3, 1987
Asea Stal AB
Roine Brannstrom
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Pneumatic transportation system for powdered or granular material w...
Patent number
4,619,562
Issue date
Oct 28, 1986
Asea Stal AB
Roine Brannstrom
C21 - METALLURGY OF IRON
Information
Patent Grant
Combustion chamber having beds located one above the other and a me...
Patent number
4,614,167
Issue date
Sep 30, 1986
ASEA-STAL AB
Jorgen Bergkvist
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of increasing the separating efficiency of a cyclone separat...
Patent number
4,606,739
Issue date
Aug 19, 1986
Asea Stal AB
Roine Brannstrom
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Grant
Method and apparatus for activating large particles
Patent number
4,592,292
Issue date
Jun 3, 1986
Asea Stal AB
Mats Olsson
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Cap for nozzles in an after combustion fluidized bed
Patent number
4,589,841
Issue date
May 20, 1986
Asea Stal AB
Jorgen Bergkvist
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of igniting a combustion chamber with a fluidized bed and a...
Patent number
4,584,949
Issue date
Apr 29, 1986
Asea Stal AB
Roine Brannstrom
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Power plant with a fluidized bed combustion chamber
Patent number
4,530,207
Issue date
Jul 23, 1985
ASEA-STAL AB
Roine Brannstrom
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL