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Patents Grants
last 30 patents
Information
Patent Grant
Multi-layer headbox for a paper/board machine
Patent number
6,544,387
Issue date
Apr 8, 2003
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Stock feed system for a multi-layer headbox and method in the opera...
Patent number
6,210,535
Issue date
Apr 3, 2001
Valmet Corporation
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method for calendering a paper web and a calendar that makes use of...
Patent number
5,983,787
Issue date
Nov 16, 1999
Valmet Corporation
Ari Linsuri
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Twin-wire gap former in a paper machine
Patent number
5,766,419
Issue date
Jun 16, 1998
Valmet Corporation
Ari Linsuri
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Stock feed system for a multi-layer headbox and method in the opera...
Patent number
5,746,889
Issue date
May 5, 1998
Valmet Corporation
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and device in the regulation of a headbox
Patent number
5,688,372
Issue date
Nov 18, 1997
Valmet Corporation
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Hybrid former with an MB unit in a paper machine
Patent number
5,593,546
Issue date
Jan 14, 1997
Valmet Corporation
Heikki Ilvespaa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Twin wire web former in a paper machine
Patent number
5,573,643
Issue date
Nov 12, 1996
Valmet Corporation
Jyrki Jaakkola
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method, device and arrangement for regulating the control of a tran...
Patent number
5,552,021
Issue date
Sep 3, 1996
Valmet Corporation
Heikki Ilvesp aa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and device in the regulation of a headbox
Patent number
5,545,293
Issue date
Aug 13, 1996
Valmet Corporation
Jyrki Huovila
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Turbulence generator in the headbox of a papermaking machine
Patent number
5,110,416
Issue date
May 5, 1992
Valmet Paper Machinery Inc.
Ari Linsuri
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Patents Applications
last 30 patents
Information
Patent Application
MULTI-LAYER HEADBOX FOR A PAPER/BOARD MACHINE
Publication number
20010037867
Publication date
Nov 8, 2001
JYRKI HUOVILA
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE