Assignee
AHLSTROEM OY
FI325 patents
Top patents by PatentIndex Score
US4594052AJun 10, 1986
Centrifugal pump for liquids containing solid material
AHLSTROEM OY144 citations98
US5246541ASep 21, 1993
Evaporator for liquid solutions
AHLSTROEM OY60 citations96
US5110332AMay 5, 1992
Filter for filtration of particles from a hot gas flow
AHLSTROEM OY103 citations96
US4921400AMay 1, 1990
Pump and a method of separating gas by such from a fluid to be pumped
AHLSTROEM OY73 citations96
US4869207ASep 26, 1989
Circulating fluidized bed reactor
AHLSTROEM OY58 citations96
US4981413AJan 1, 1991
Pump for and method of separating gas from a fluid to be pumped
AHLSTROEM OY86 citations95
US4841884AJun 27, 1989
Distributor plate for fluidized bed reactor
AHLSTROEM OY69 citations95
US4311670AJan 19, 1982
Fluidized bed reactor system
AHLSTROEM OY91 citations95
US5318755AJun 7, 1994
Method and apparatus for cleaning flue gases
AHLSTROEM OY53 citations94
US6010594AJan 4, 2000
Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
AHLSTROEM OY46 citations92
US5533471AJul 9, 1996
fluidized bed reactor and method of operation thereof
AHLSTROEM OY23 citations92
US5462585AOct 31, 1995
Method and apparatus for separating gas from a gaseous material
AHLSTROEM OY38 citations92
US5406914AApr 18, 1995
Method and apparatus for operating a circulating fluidized bed reactor system
AHLSTROEM OY41 citations92
US5341766AAug 30, 1994
Method and apparatus for operating a circulating fluidized bed system
AHLSTROEM OY42 citations92
US5332553AJul 26, 1994
Method for circulating solid material in a fluidized bed reactor
AHLSTROEM OY25 citations92
US5203963AApr 20, 1993
Continuous treatment of small chips
AHLSTROEM OY21 citations92
US5192438AMar 9, 1993
Rotating element for screening apparatus with a contour surface produced by a plurality of protrusions in the direction of the axial length of the rotor
AHLSTROEM OY27 citations92
US5167678ADec 1, 1992
Apparatus for separating gas with a pump from a medium being pumped
AHLSTROEM OY42 citations92
US4877368AOct 31, 1989
Fluidizing centrifugal pump
AHLSTROEM OY38 citations92
US4708092ANov 24, 1987
Circulating fluidized bed boiler
AHLSTROEM OY25 citations92
US4699068AOct 13, 1987
Apparatus for separating solids from flue gases in a circulating fluidized bed reactor
AHLSTROEM OY27 citations92
US4676177AJun 30, 1987
Method of generating energy from low-grade alkaline fuels
AHLSTROEM OY50 citations92
US4529520AJul 16, 1985
Screen plate
AHLSTROEM OY63 citations92
US4330502AMay 18, 1982
Fluidized bed reactor
AHLSTROEM OY42 citations92
US4273562AJun 16, 1981
Method and apparatus for pumping gaseous liquids and separating the gaseous components therefrom
AHLSTROEM OY46 citations92
US4244779AJan 13, 1981
Method of treating spent pulping liquor in a fluidized bed reactor
AHLSTROEM OY38 citations92
US5791778AAug 11, 1998
Method and apparatus for mixing gaseous chemical to fiber suspension
AHLSTROEM OY44 citations91
US5711789AJan 27, 1998
Apparatus for pumping gas-containing fiber suspensions
AHLSTROEM OY22 citations91
US5165236ANov 24, 1992
Detection of particles in a hot gas flow upstream of a gas turbine
AHLSTROEM OY22 citations91
US5078573AJan 7, 1992
Liquid ring pump having tapered blades and housing
AHLSTROEM OY37 citations91
US4969930ANov 13, 1990
Process for gasifying or combusting solid carbonaceous material
AHLSTROEM OY89 citations91
US4864944ASep 12, 1989
Fluidized bed reactor
AHLSTROEM OY25 citations91
US4799937AJan 24, 1989
Method and apparatus for gasifying carbonaceous material
AHLSTROEM OY34 citations91
US4239072ADec 16, 1980
Method and apparatus for edge-trimming a board
AHLSTROEM OY46 citations91
US5562884AOct 8, 1996
Reducing N2 O emissions when burning nitrogen-containing fuels in fluidized bed reactors
AHLSTROEM OY24 citations90
US5378443AJan 3, 1995
Method for reducing emissions when burning nitrogen containing fuels
AHLSTROEM OY44 citations90
US5293843AMar 15, 1994
Combustor or gasifier for application in pressurized systems
AHLSTROEM OY30 citations90
US5281398AJan 25, 1994
Centrifugal separator
AHLSTROEM OY52 citations90
US5242472ASep 7, 1993
Flow restrictor in a pulse cleaning system
AHLSTROEM OY22 citations90
US5154732AOct 13, 1992
Apparatus for gasifying or combusting solid carbonaceous
AHLSTROEM OY35 citations90
US5149448ASep 22, 1992
Method and apparatus for thickening lime sludge
AHLSTROEM OY35 citations90
US5139652AAug 18, 1992
Centrifugal cleaner
AHLSTROEM OY37 citations90
US5093085AMar 3, 1992
Fluidized bed reactor method and apparatus
AHLSTROEM OY58 citations90
US4971658ANov 20, 1990
Method of intensifying the washing of a fiber suspension
AHLSTROEM OY44 citations90
US4929255AMay 29, 1990
Method for gasifying or combusting solid carbonaceous material
AHLSTROEM OY30 citations90
US4827723AMay 9, 1989
Integrated gas turbine power generation system and process
AHLSTROEM OY28 citations90
US4771712ASep 20, 1988
Combustion of fuel containing alkalines
AHLSTROEM OY38 citations90
US4616576AOct 14, 1986
Combustion method
AHLSTROEM OY39 citations90
US4240315ADec 23, 1980
Circular saw blade
AHLSTROEM OY32 citations90
US5465690ANov 14, 1995
Method of purifying gases containing nitrogen oxides and an apparatus for purifying gases in a steam generation boiler
AHLSTROEM OY21 citations89
Showing the top 50 of 325 patents by PatentIndex Score.