Kemira Oy

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
A41D OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES 134
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
D21H PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR 137
 
  
 
F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 172
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 1150
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5764203 Breathing mask with a display unitAug 19, 96Jun 09, 98[G09G]
5695609 Process for producing paperJan 19, 96Dec 09, 97[D21H]
5687296 Image data processor having data bus switching circuit for changing image resolutionMay 16, 95Nov 11, 97[H04N, G06F]
5611928 Process for treating waste waterJul 14, 95Mar 18, 97[C02F]
5612277 Catalyst and method for manufacturing the sameFeb 28, 95Mar 18, 97[F01N, B01J]
5603911 Preparing a crystalline, stable sodium percarbonateApr 25, 95Feb 18, 97[C01B]
5583087 Method for impregnating catalyst support with platinumSep 19, 94Dec 10, 96[B01J]
5443811 Method of preparing titanium dioxideMay 24, 93Aug 22, 95[C01G]
5410757 Face shieldMay 23, 94May 02, 95[A41D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5589625 Transgenic plants displaying multiple virus resistance and a process for their productionExpiredJan 18, 95Dec 31, 96[C12N, A01H]
5580533 Catalyst and process for purifying diesel exhaust gasesExpiredOct 24, 94Dec 03, 96[B01J]
5534476 Use of a super alloy as a substrate for catalystsExpiredJun 23, 94Jul 09, 96[B01J]
5482529 Fertilizing preparation improving the extraction of phosphorus for plantsExpiredJul 15, 94Jan 09, 96[C05B]
5451243 Controlled-release fertilizer composition in the form of a pasteExpiredDec 27, 93Sep 19, 95[C05G]
5445717 Method for simultaneous production of alkali metal or ammonium peroxodisulphate salts and alkali metal hydroxideExpiredAug 08, 94Aug 29, 95[C25B]
5443808 Method of producing alkali metal phosphateExpiredDec 12, 94Aug 22, 95[C01B]
5435985 Hydrogenation catalyst for use in a hydrogen peroxide process, and method for the preparation thereofExpiredFeb 08, 94Jul 25, 95[C01B, C07C]
5250276 Method for preparing ferric chlorideExpiredDec 20, 91Oct 05, 93[C01G]
5217629 Procedure for cleaning filter used in production of hydrogen peroxide from anthraquinoneExpiredSep 10, 91Jun 08, 93[C01B, B01D]
5196179 Process for the production of hydrogen peroxideExpiredSep 20, 90Mar 23, 93[C01B]
5178847 Process for producing ceramic raw materialsExpiredNov 28, 89Jan 12, 93[G01B]
5165995 Process for coating titanium dioxide pigmentsExpiredJun 26, 90Nov 24, 92[B32B]
5114701 Method for producing hydrogen peroxide and solvent system for use in the hydrogen peroxide production processExpiredAug 22, 90May 19, 92[C01B]
5077027 Method for producing silicon halides by reducing silicon tetrhalides under a plasma torchExpiredMay 30, 90Dec 31, 91[C01B]
5071634 Process for the preparation of hydrogen peroxide (I)ExpiredJan 24, 90Dec 10, 91[C01B]
5061317 Colored nacreous pigment and a method for its preparationExpiredJan 18, 89Oct 29, 91[C04B]
5055275 Reinforced catalytic unit intended for purifying exhaust gasesExpiredFeb 22, 88Oct 08, 91[B01D]
4991424 Integrated heatable sensorExpiredMay 22, 89Feb 12, 91[G01N]
4905687 Method and apparatus for regulating air supplied to a gas maskExpiredMar 31, 89Mar 06, 90[A61M]

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