Toivo Niskanen

Person

Karhula, FI

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for separating gas from a gaseous material
- Patent number 6,071,331
- Issue date Jun 6, 2000
- Ahlstrom Machinery Corporation
- Toivo Niskanen
- 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
Method and apparatus for separating gas from a gaseous material
- Patent number 5,462,585
- Issue date Oct 31, 1995
- A. Ahlstrom Corporation
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for improving the control and treatment of fib...
- Patent number 5,279,709
- Issue date Jan 18, 1994
- A. Ahlstrom
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of an apparatus for treating pulp
- Patent number 5,266,160
- Issue date Nov 30, 1993
- Kamyr, Inc.
- Kaj O. Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Minimizing gas separation in a mixer outlet
- Patent number 5,258,100
- Issue date Nov 2, 1993
- Kamyr, Inc.
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for dividing flow of high-consistency fiber su...
- Patent number 5,228,829
- Issue date Jul 20, 1993
- A. Ahlstrom Corporation
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for thickening a fiber suspension and removing...
- Patent number 5,156,750
- Issue date Oct 20, 1992
- A. Ahlstrom Corporation
- Kaj Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Arrangement for discharging pulp from a pulp treatment apparatus
- Patent number 5,120,398
- Issue date Jun 9, 1992
- A. Ahlstrom Corporation
- Kaj O. Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for keeping a screen or filter surface clear
- Patent number 5,034,120
- Issue date Jul 23, 1991
- A. Ahlstrom Corporation
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for pumping high consistency fiber suspension
- Patent number 5,000,658
- Issue date Mar 19, 1991
- A. Ahlstrom Corporation
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for thickening fiber suspension
- Patent number 4,975,204
- Issue date Dec 4, 1990
- A. Ahlstrom Corporation
- Kaj O. Henricson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for dividing and uniting the flows of high-con...
- Patent number 4,964,950
- Issue date Oct 23, 1990
- A. Ahlstrom Corporation
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Pump and a method of separating gas by such from a fluid to be pumped
- Patent number 4,921,400
- Issue date May 1, 1990
- A. Ahlstrom Corporation
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and apparatus for pumping high-consistency fiber suspension
- Patent number 4,884,943
- Issue date Dec 5, 1989
- A. Ahlstrom Corporation
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Apparatus for mixing chemicals in fibre suspensions
- Patent number 4,834,547
- Issue date May 30, 1989
- A. Ahlstrom Corporation
- Toivo Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for separating gas from a fibre suspension
- Patent number 4,675,033
- Issue date Jun 23, 1987
- A. Ahlstrom Corporation
- Raimo Fellman
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Centrifugal pump for liquids containing solid material
- Patent number 4,594,052
- Issue date Jun 10, 1986
- A. Ahlstrom Osakeyhtio
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Affixation of a pump to a tank
- Patent number 4,476,886
- Issue date Oct 16, 1984
- Kamyr AB
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Controlling operation of a centrifugal pump
- Patent number 4,435,193
- Issue date Mar 6, 1984
- Kamyr AB
- Johan E. Gullichsen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for pumping fiber suspensions
- Patent number 4,435,122
- Issue date Mar 6, 1984
- A. Ahlstrom Osakeyhtio
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and an apparatus for separating a gas from a fibre suspension
- Patent number 4,410,337
- Issue date Oct 18, 1983
- A. Ahlstrom Osakeyhtio
- Johan Gullichsen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for pumping gaseous liquids and separating the...
- Patent number 4,273,562
- Issue date Jun 16, 1981
- A. Ahlstrom Osakeyhtio
- Toivo Niskanen
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Toivo Niskanen

Person

Patents Grantslast 30 patents

Method and apparatus for separating gas from a gaseous material

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

Method and apparatus for separating gas from a gaseous material

Method and apparatus for improving the control and treatment of fib...

Method of an apparatus for treating pulp

Minimizing gas separation in a mixer outlet

Method and apparatus for dividing flow of high-consistency fiber su...

Method and apparatus for thickening a fiber suspension and removing...

Arrangement for discharging pulp from a pulp treatment apparatus

Method for keeping a screen or filter surface clear

Apparatus for pumping high consistency fiber suspension

Method and apparatus for thickening fiber suspension

Method and apparatus for dividing and uniting the flows of high-con...

Pump and a method of separating gas by such from a fluid to be pumped

Method and apparatus for pumping high-consistency fiber suspension

Apparatus for mixing chemicals in fibre suspensions

Apparatus for separating gas from a fibre suspension

Centrifugal pump for liquids containing solid material

Affixation of a pump to a tank

Controlling operation of a centrifugal pump

Method and apparatus for pumping fiber suspensions

Method and an apparatus for separating a gas from a fibre suspension

Method and apparatus for pumping gaseous liquids and separating the...