EKA NOBEL INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 830
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF277
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 167

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5858174 Process for the production of paperJul 08, 96Jan 12, 99[D21H]
5846384 Process for the production of paperJun 10, 96Dec 08, 98[D21H]
5770171 Process for production of chlorine dioxideMar 05, 90Jun 23, 98[C01B]
5643414 Silica sols in papermakingJun 27, 94Jul 01, 97[D21H]
5607552 Aqueous suspensions of colloidal particles, preparation and use of the suspensionsFeb 13, 95Mar 04, 97[D21H]
5512135 Process for the production of paperJan 03, 94Apr 30, 96[D21H]
5496440 Process for the manufacture of paperJan 03, 94Mar 05, 96[D21H]
5470480 Process for treating waste water effluentJun 17, 94Nov 28, 95[C02F]
5447604 Silica sols, a process for the production of silica sols and use of the solsMay 08, 92Sep 05, 95[C04B, B01J, D21H]
5368833 Silica sols having high surface areaMay 08, 92Nov 29, 94[C01B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5866002 Apparatus for activation of a digesting agent and method of its useExpiredOct 30, 96Feb 02, 99[C12M, C02F]
5788815 Process for the production of paperExpiredJan 08, 97Aug 04, 98[D21F]
5441470 Height-adjusting device for an exercise apparatusExpiredOct 27, 94Aug 15, 95[A63B]
5288317 Dissolving methodExpiredDec 09, 91Feb 22, 94[C08L]
5127994 Process for the production of paperExpiredJan 24, 89Jul 07, 92[D21H]
4964557 Bidirectional web guiding systemExpiredApr 28, 89Oct 23, 90[B65H]
4964954 Process for the production of paperExpiredOct 26, 88Oct 23, 90[D21H]
4798653 Retention and drainage aid for papermakingExpiredMar 08, 88Jan 17, 89[D21H]
4755259 Process for papermakingExpiredDec 22, 86Jul 05, 88[D21H]
4385961 PapermakingExpiredFeb 26, 81May 31, 83[D21H]

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