Patent assignee · SE · COMPANY

Kvaerner Pulping AB

108Patents
0Active
108Granted
39Portfolio score

Filing activity: Jan 20, 1995 → Sep 13, 2004

Most-cited patents

PatentTitleAreaCited byStatus
US5935053A Fractionator Textiles; Paper 31 Expired
US5744004A System for feeding a suspension to a pressurized vessel Mechanical Engineering; Lighting; Heating 24 Expired
US5824187A Method for the continuous cooking of pulp Textiles; Paper 22 Expired
US6258282A Rotatable filter system for filtration of a flowing substance Performing Operations; Transporting 20 Expired
US6113783A Device in a filter sector for a rotating filter disc Performing Operations; Transporting 15 Expired
US6071378A Method and device for treating a pulp suspension Performing Operations; Transporting 15 Expired
US5636849A Translatable bearing stuffing box Textiles; Paper 13 Expired
US6468390B1 Method for continuous cooking of lignocellulosic fiber material Textiles; Paper 13 Expired
US6179958A Method for continuous cooking of cellulose-containing fibre material Textiles; Paper 12 Expired
US6123807A Method for the continuous cooking of pulp Textiles; Paper 12 Expired
US6059323A Expansion unit for piping adjustment Mechanical Engineering; Lighting; Heating 11 Expired
US6095028A Hydraulic unit Mechanical Engineering; Lighting; Heating 10 Expired
US5771817A Recovery boiler Mechanical Engineering; Lighting; Heating 10 Expired
US5885414A Method of producing pulp with high alkali cooking in the last cooking stage Textiles; Paper 10 Expired
US6203662A Method for the continuous cooking of pulp in a digester system having a top separator Textiles; Paper 10 Expired
US7156952B2 Method and arrangement for oxygen delignification of cellulose pulp Textiles; Paper 9 Expired
US6159336A Method and device for the continuous cooking of pulp Textiles; Paper 8 Expired
US6103058A Method for the continuous cooking of pulp Textiles; Paper 8 Expired
US6062547A Quench vessel for recovering chemicals and energy from spent liquors Emerging Cross-Sectional Technologies 8 Expired
US6139685A Method and device for treating a pulp suspension Textiles; Paper 8 Expired
US6341888B1 Apparatus for introduction of a first fluid into a second fluid Textiles; Paper 7 Expired
US6238468A Quench vessel Emerging Cross-Sectional Technologies 7 Expired
US6793809B2 Pipe system for receiving and transporting lime sludge from a white liquor filter Emerging Cross-Sectional Technologies 7 Expired
US6113739A Process for washing gas formed by gasifying black liquor Emerging Cross-Sectional Technologies 7 Expired
US5716497A Method and device for the continuous cooking of pulp Textiles; Paper 7 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.