Esa Lehtovirta

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Jyvaskyla, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method and equipment for attenuation of oscillation in a paper mach...
- Patent number 6,911,117
- Issue date Jun 28, 2005
- Metso Paper, Inc.
- Jouko Karhunen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for preventing vibrations of a roll set
- Patent number 5,915,297
- Issue date Jun 29, 1999
- Valmet Corporation
- Esa Lehtovirta
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for preventing vibrations of a roll set
- Patent number 5,768,985
- Issue date Jun 23, 1998
- Valmet Corporation
- Esa Lehtovirta
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE