Pertti Haapamaki

Follow

Person

Montreal, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Pulp washing method and plant
- Patent number 6,789,285
- Issue date Sep 14, 2004
- Metso Paper Pori Oy
- Pertti Haapamäki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and equipment for filtration of suspension
- Patent number 5,051,195
- Issue date Sep 24, 1991
- Sunds Defibrator Rauma Oy
- Pertti Haapamaki
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of washing cellulosic pulp submerged in washing liquid
- Patent number 4,664,749
- Issue date May 12, 1987
- Rauma-Repola Oy
- Pertti Haapamaki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE