A. Ahlstrom Corporation

Organization

Karhula, FI

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for treating a fiber suspension
- Patent number RE36297
- Issue date Sep 14, 1999
- A. Ahlstrom Corporation
- Jukka Heino
- 210 - Liquid purification or separation
Information Patent Grant
Method and apparatus for thickening lime mud with a disc filter
- Patent number 5,900,158
- Issue date May 4, 1999
- A. Ahlstrom Corporation
- Pekka Ruokolainen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for pumping cellulose pulp
- Patent number 5,851,350
- Issue date Dec 22, 1998
- A. Ahlstrom Corporation
- Jukka Timperi
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Gas separation control in a centrifugal pump vacuum pump
- Patent number 5,842,833
- Issue date Dec 1, 1998
- A. Ahlstrom Corporation
- Voitto Reponen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for mixing gaseous chemical to fiber suspension
- Patent number 5,791,778
- Issue date Aug 11, 1998
- A. Ahlstrom Corporation
- Matti Manninen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating hot gases
- Patent number 5,759,495
- Issue date Jun 2, 1998
- A. Ahlstrom Corporation
- Timo Hyppanen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Apparatus for pumping gas-containing fiber suspensions
- Patent number 5,711,789
- Issue date Jan 27, 1998
- A. Ahlstrom Corporation
- Jorma Elonen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for feeding air into a furnace
- Patent number 5,699,746
- Issue date Dec 23, 1997
- A. Ahlstrom Corporation
- Samuli Nikkanen
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Mattress
- Patent number 5,621,934
- Issue date Apr 22, 1997
- A. Ahlstrom Corporation
- Kari Olkkonen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Ozone bleaching process utilizing a fluidizing mixer and super-atmo...
- Patent number 5,607,545
- Issue date Mar 4, 1997
- A. Ahlstrom Corporation
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for treating hot gases
- Patent number 5,585,071
- Issue date Dec 17, 1996
- A. Ahlstrom Corporation
- Timo Hyppanen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for screening fibrous suspensions
- Patent number 5,575,395
- Issue date Nov 19, 1996
- A. Ahlstrom Corporation
- Timo Alajaaski
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and arrangement for the treatment of a fiber suspension
- Patent number 5,571,384
- Issue date Nov 5, 1996
- A. Ahlstrom Corporation
- Olavi Pikka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Reducing N.sub.2 O emissions when burning nitrogen-containing fuels...
- Patent number 5,562,884
- Issue date Oct 8, 1996
- A. Ahlstrom Corporation
- Eric J. Oakes
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Minimal effluents discharge pulp mill with chemical recovery
- Patent number 5,549,788
- Issue date Aug 27, 1996
- A. Ahlstrom Corporation
- Tuomo S. Nykanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for treating fiber suspension
- Patent number 5,547,083
- Issue date Aug 20, 1996
- A. Ahlstrom Corporation
- Timo Alajaaski
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for processing bed material in fluidized bed r...
- Patent number 5,540,894
- Issue date Jul 30, 1996
- A. Ahlstrom Corporation
- Timo Hyppanen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Apparatus for the discharge of a mass tower
- Patent number 5,538,597
- Issue date Jul 23, 1996
- A. Ahlstrom Corporation
- Arto Koso
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for mixing a first medium to a second medium a...
- Patent number 5,536,368
- Issue date Jul 16, 1996
- A. Ahlstrom Corporation
- Mika P. Makela
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
fluidized bed reactor and method of operation thereof
- Patent number 5,533,471
- Issue date Jul 9, 1996
- A. Ahlstrom Corporation
- Timo Hyppanen
- F22 - STEAM GENERATION
Information Patent Grant
Centrifugal pump
- Patent number 5,531,564
- Issue date Jul 2, 1996
- A. Ahlstrom Corporation
- Kari Anttonen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Pressurized reactor system and a method of operating the same
- Patent number 5,526,582
- Issue date Jun 18, 1996
- A. Ahlstrom Corporation
- Juhani M. Isaksson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of affecting the sulphur content and/or sulphur compound com...
- Patent number 5,518,582
- Issue date May 21, 1996
- A. Ahlstrom Corporation
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Zero discharge mill distillation, salt recovery, and water management
- Patent number 5,518,583
- Issue date May 21, 1996
- A. Ahlstrom Corporation
- Tuomo S. Nykanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of recovering energy from waste liquors from pulp processes
- Patent number 5,509,997
- Issue date Apr 23, 1996
- A. Ahlstrom Corporation
- Marjo Kuusio
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Cleaning of high temperature high pressure (HTHP) gases
- Patent number 5,505,906
- Issue date Apr 9, 1996
- A. Ahlstrom Corporation
- Folke Engstrom
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Gas filtering apparatus
- Patent number 5,482,537
- Issue date Jan 9, 1996
- A. Ahlstrom Corporation
- Timo Eriksson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of controlling sulfidity of a sulfate pulp mill
- Patent number 5,480,512
- Issue date Jan 2, 1996
- A. Ahlstrom Corporation
- Krister Sannholm
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Treatment of process gases containing halogenous compounds
- Patent number 5,481,063
- Issue date Jan 2, 1996
- A. Ahlstrom Corporation
- Matti Hiltunen
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for purification of waste gases
- Patent number 5,480,624
- Issue date Jan 2, 1996
- A. Ahlstrom Corporation
- Reijo Kuivalainen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
75362796 - AHL
- Serial number 75362796
- Filing date Sep 25, 1997
- A. AHLSTROM CORPORATION
- 7 - Machines and machine tools
Information Trademark
75056446 - ZEDIVAP
- Serial number 75056446
- Filing date Feb 12, 1996
- A. AHLSTROM CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
74534687
- Serial number 74534687
- Registration number 1945083
- Filing date Jun 7, 1994
- A. AHLSTROM CORPORATION
- 7 - Machines and machine tools
Information Trademark
74531956 - CARITAL
- Serial number 74531956
- Registration number 2114406
- Filing date Jun 1, 1994
- A. AHLSTROM CORPORATION
- 20 - Furniture, mirrors, picture frames
Information Trademark
74435139 - ECOFIRE
- Serial number 74435139
- Filing date Sep 14, 1993
- A. Ahlstrom Corporation
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
74389217 - ROSCO
- Serial number 74389217
- Registration number 1966077
- Filing date May 7, 1993
- A. AHLSTROM CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
74289808 - FLUXFLOW
- Serial number 74289808
- Filing date Jun 30, 1992
- A. Ahlstrom Corporation
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
74249756 - ZEDIVAP
- Serial number 74249756
- Filing date Feb 26, 1992
- A. AHLSTROM CORPORATION
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
74150075 - AHLWIRE
- Serial number 74150075
- Filing date Mar 22, 1991
- A. Ahlstrom Corporation
- 7 - Machines and machine tools
Information Trademark
74058924 - ECOFLOW
- Serial number 74058924
- Filing date May 14, 1990
- A. Ahlstrom Corporation
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information Trademark
73654447 - PROFILE
- Serial number 73654447
- Registration number 1582236
- Filing date Apr 10, 1987
- A. AHLSTROM CORPORATION
- 7 - Machines and machine tools
Information Trademark
73654448 - PROFIHARD
- Serial number 73654448
- Registration number 1531620
- Filing date Apr 10, 1987
- A. AHLSTROM CORPORATION
- 7 - Machines and machine tools
Information Trademark
73525973 - TANGO AHLSTROM
- Serial number 73525973
- Registration number 1428319
- Filing date Mar 8, 1985
- A. AHLSTROM CORPORATION
- 16 - Paper, cardboard and goods made from these materials, not included in other classes

A. Ahlstrom Corporation

Organization

Patents Grantslast 30 patents

Method and apparatus for treating a fiber suspension

Method and apparatus for thickening lime mud with a disc filter

Method and apparatus for pumping cellulose pulp

Gas separation control in a centrifugal pump vacuum pump

Method and apparatus for mixing gaseous chemical to fiber suspension

Method and apparatus for treating hot gases

Apparatus for pumping gas-containing fiber suspensions

Method and apparatus for feeding air into a furnace

Mattress

Ozone bleaching process utilizing a fluidizing mixer and super-atmo...

Method and apparatus for treating hot gases

Method and apparatus for screening fibrous suspensions

Method and arrangement for the treatment of a fiber suspension

Reducing N.sub.2 O emissions when burning nitrogen-containing fuels...

Minimal effluents discharge pulp mill with chemical recovery

Apparatus for treating fiber suspension

Method and apparatus for processing bed material in fluidized bed r...

Apparatus for the discharge of a mass tower

Method and apparatus for mixing a first medium to a second medium a...

fluidized bed reactor and method of operation thereof

Centrifugal pump

Pressurized reactor system and a method of operating the same

Method of affecting the sulphur content and/or sulphur compound com...

Zero discharge mill distillation, salt recovery, and water management

Method of recovering energy from waste liquors from pulp processes

Cleaning of high temperature high pressure (HTHP) gases

Gas filtering apparatus

Method of controlling sulfidity of a sulfate pulp mill

Treatment of process gases containing halogenous compounds

Method for purification of waste gases

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

75362796 - AHL

75056446 - ZEDIVAP

74534687

74531956 - CARITAL

74435139 - ECOFIRE

74389217 - ROSCO

74289808 - FLUXFLOW

74249756 - ZEDIVAP

74150075 - AHLWIRE

74058924 - ECOFLOW

73654447 - PROFILE

73654448 - PROFIHARD

73525973 - TANGO AHLSTROM