Pertti Puumalainen

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70100 Kuopio 10, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method for detection of foreign matter contents in gases
- Patent number 5,047,723
- Issue date Sep 10, 1991
- Pertti Puumalainen
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for measuring of humidity
- Patent number 4,812,665
- Issue date Mar 14, 1989
- Roibox OY
- Pertti Puumalainen
- G01 - MEASURING TESTING
Information Patent Grant
Measuring the thickness for a continuous material web
- Patent number 4,700,486
- Issue date Oct 20, 1987
- Puumalaisen Tutkimuslaitos Oy
- Pertti Puumalainen
- G01 - MEASURING TESTING
Information Patent Grant
Procedure for measuring the quantity of silicon coating on paper or...
- Patent number 4,639,942
- Issue date Jan 27, 1987
- Enso-Gutzeit OY
- Pertti Puumalainen
- G01 - MEASURING TESTING
Information Patent Grant
Procedure and means for observing streaks in the machine direction...
- Patent number 4,595,840
- Issue date Jun 17, 1986
- Enso-Gutzeit OY
- Pertti Puumalainen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Procedure for measuring unit area weights
- Patent number 4,147,931
- Issue date Apr 3, 1979
- Pertti Puumalainen
- G01 - MEASURING TESTING