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Karhula, FI
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last 30 patents
Information
Patent Grant
Headbox of a paper/board machine by whose means the basis weight of...
Patent number
6,432,275
Issue date
Aug 13, 2002
Metso Paper, Inc.
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Means for controlling wires in a paper machine or cardboard machine
Patent number
5,185,064
Issue date
Feb 9, 1993
Valmet-Ahlstrom Inc.
Tapani Nyman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Single-layer or multi-layer headbox for wide flow range with adjust...
Patent number
5,074,965
Issue date
Dec 24, 1991
Valmet-Karhula Inc.
Juha Keskiivari
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hydraulic headbox with air attenuation chamber located under the st...
Patent number
4,923,569
Issue date
May 8, 1990
Valmet-Ahlstrom, Inc.
Tapani Nyman
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Support apparatus for a dewatering unit in the web forming section...
Patent number
4,769,111
Issue date
Sep 6, 1988
A. Ahlstrom Corporation
Taisto A. Nevalainen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Thermal stabilizing system for a headbox of a papermachine
Patent number
4,552,619
Issue date
Nov 12, 1985
A. Ahlstrom Osakeyhtio
Sakari Laitinen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE