Assignee
KEMIRA OY
FI50 patents
Top patents by PatentIndex Score
US4755743AJul 5, 1988
Method and apparatus for measuring the moisture content or dry-matter content of materials using a microwave dielectric waveguide
KEMIRA OY29 citations92
US4905687AMar 6, 1990
Method and apparatus for regulating air supplied to a gas mask
KEMIRA OY50 citations91
US4732708AMar 22, 1988
Method for converting vegetable material into chemicals
KEMIRA OY65 citations91
US5482529AJan 9, 1996
Fertilizing preparation improving the extraction of phosphorus for plants
KEMIRA OY60 citations89
US5071634ADec 10, 1991
Process for the preparation of hydrogen peroxide (i)
KEMIRA OY31 citations88
US4737491AApr 12, 1988
Wood preservative
KEMIRA OY87 citations86
US4375989AMar 8, 1983
Coated titanium dioxide pigment and a process for the production of the same
KEMIRA OY97 citations86
US5410757AMay 2, 1995
Face shield
KEMIRA OY60 citations85
US4756801AJul 12, 1988
Paper-making method and a combination of ingredients to be used in it
KEMIRA OY30 citations82
US5695609ADec 9, 1997
Process for producing paper
KEMIRA OY40 citations81
US5445717AAug 29, 1995
Method for simultaneous production of alkali metal or ammonium peroxodisulphate salts and alkali metal hydroxide
KEMIRA OY41 citations81
US5443811AAug 22, 1995
Method of preparing titanium dioxide
KEMIRA OY33 citations81
US5165995ANov 24, 1992
Process for coating titanium dioxide pigments
KEMIRA OY35 citations81
US5764203AJun 9, 1998
Breathing mask with a display unit
KEMIRA OY28 citations80
US5451243ASep 19, 1995
Controlled-release fertilizer composition in the form of a paste
KEMIRA OY8 citations70
US3981737ASep 21, 1976
Process for producing lightproof titanium dioxide pigment
KEMIRA OY27 citations70
US5196179AMar 23, 1993
Process for the production of hydrogen peroxide
KEMIRA OY8 citations69
US5580533ADec 3, 1996
Catalyst and process for purifying diesel exhaust gases
KEMIRA OY14 citations67
US4057057ANov 8, 1977
Breathing mask, especially a half mask or a full mask provided with an inner mask
KEMIRA OY18 citations67
US5435985AJul 25, 1995
Hydrogenation catalyst for use in a hydrogen peroxide process, and method for the preparation thereof
KEMIRA OY17 citations66
US5076849ADec 31, 1991
Transparent metal oxide pigment and method for its preparation
KEMIRA OY8 citations66
US5055275AOct 8, 1991
Reinforced catalytic unit intended for purifying exhaust gases
KEMIRA OY14 citations66
US4741082AMay 3, 1988
Method for manufacturing and reinforcing a catalytic unit intended for purifying exhaust gases
KEMIRA OY12 citations66
US5612277AMar 18, 1997
Catalyst and method for manufacturing the same
KEMIRA OY17 citations65
US5534476AJul 9, 1996
Use of a super alloy as a substrate for catalysts
KEMIRA OY7 citations65
US4595589AJun 17, 1986
Fungistatic method
KEMIRA OY10 citations65
US5603911AFeb 18, 1997
Preparing a crystalline, stable sodium percarbonate
KEMIRA OY10 citations63
US4883539ANov 28, 1989
Coated silicate particles
KEMIRA OY10 citations63
US4687571AAug 18, 1987
Process for the froth-flotation of a phosphate mineral from a phosphate-carbonate ore
KEMIRA OY6 citations63
US4210747AJul 1, 1980
Process for the preparation of viscose
KEMIRA OY7 citations62
US5061317AOct 29, 1991
Colored nacreous pigment and a method for its preparation
KEMIRA OY12 citations61
USD253197SOct 23, 1979
Helmet
KEMIRA OY16 citations60
US4008256AFeb 15, 1977
Esterification of furfuryl alcohol and its derivates
KEMIRA OY4 citations60
US4756896AJul 12, 1988
Method of preparing silicon
KEMIRA OY13 citations59
US4662929AMay 5, 1987
Method for recovering nutrients from the flue gases of a fertilizer plant
KEMIRA OY11 citations59
US4163045AJul 31, 1979
Process for producing hydrogen fluoride from an aqueous solution of hydrogen fluoride and sulfuric acid
KEMIRA OY12 citations59
US5217629AJun 8, 1993
Procedure for cleaning filter used in production of hydrogen peroxide from anthraquinone
KEMIRA OY7 citations58
US4349660ASep 14, 1982
Process for the production of air drying modified amino resin
KEMIRA OY7 citations58
US4164582AAug 14, 1979
Synergistic fungicidal compositions
KEMIRA OY8 citations58
US3983222ASep 28, 1976
Removing nitrates with an organic amine salt and ion exchange
KEMIRA OY9 citations58
US5583087ADec 10, 1996
Method for impregnating catalyst support with platinum
KEMIRA OY2 citations57
US4755285AJul 5, 1988
Process for the froth-flotation of a phosphate mineral, and a reagent intended for use in the process
KEMIRA OY4 citations56
US4775463AOct 4, 1988
Process for the flotation of phosphate mineral and an agent to be used in the flotation
KEMIRA OY5 citations53
US4045453AAug 30, 1977
Method for producing 5-nitro-2-furfuryl acetate
KEMIRA OY0 citations50
US5178847AJan 12, 1993
Process for producing ceramic raw materials
KEMIRA OY6 citations49
US5114701AMay 19, 1992
Method for producing hydrogen peroxide and solvent system for use in the hydrogen peroxide production process
KEMIRA OY1 citations48
US5611928AMar 18, 1997
Process for treating waste water
KEMIRA OY4 citations46
US5077027ADec 31, 1991
Method for producing silicon halides by reducing silicon tetrhalides under a plasma torch
KEMIRA OY4 citations46
US4073635AFeb 14, 1978
Process for producing a slurry suitable for the manufacture of a mixed fertilizer containing nitrogen plus phosphorus
KEMIRA OY4 citations46
US5443808AAug 22, 1995
Method of producing alkali metal phosphate
KEMIRA OY4 citations45