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Patents Grants
last 30 patents
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
Information
Patent Grant
Method for multistage bleaching and washing with recycle of displac...
Patent number
4,529,479
Issue date
Jul 16, 1985
Rauma-Repola Oy
Alpo Tuomi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method and equipment for thickening of suspension or pulp
Patent number
4,343,708
Issue date
Aug 10, 1982
Rauma-Repola Oy
Mikko Rantanen
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL