Antti Lehtinen

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Jyvaskyla, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for dewatering a fibrous web
- Patent number 4,584,058
- Issue date Apr 22, 1986
- Valmet Oy
- Antti Lehtinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Ultrasonic echo sounding device for observing web formation and pul...
- Patent number 4,574,624
- Issue date Mar 11, 1986
- Valmet Oy
- Antti Lehtinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method used in paper making for treatment of a weave
- Patent number 4,391,672
- Issue date Jul 5, 1983
- Valmet Oy
- Antti Lehtinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of improving properties of mechanical paper pulp without che...
- Patent number 4,229,250
- Issue date Oct 21, 1980
- Valmet Oy
- Antti Lehtinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE