Rutgerswerke Aktiengesellschaft

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A01N PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF 194
 
  
 
B27K PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR 18
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 191
 
  
 
C10C WORKING-UP TAR, PITCH, ASPHALT, BITUMEN; PYROLIGNEOUS ACID 110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5304237 Chromium-free wood preservativesJan 21, 93Apr 19, 94[A01N, C09D, B27K]
5283045 Sinterable carbon powder and method of its productionJan 14, 93Feb 01, 94[C01B]
5262043 Coal tar pitch and the preparation and use thereofApr 17, 92Nov 16, 93[C10C, C08L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5494675 Anti-dandruff shampooExpiredSep 11, 92Feb 27, 96[A61K]
5486538 Precious metal humates and their preparationsExpiredAug 29, 94Jan 23, 96[A61K, C07F]
5456935 Food productsExpiredNov 16, 94Oct 10, 95[A21D]
5380862 Preparation of isomer-free 2,5-dichloro-pyridineExpiredAug 23, 93Jan 10, 95[C07D]
5360915 Modified huminates and their preparationExpiredOct 14, 92Nov 01, 94[C08G, C07D]
5284651 Huminates, process and usesExpiredOct 14, 92Feb 08, 94[A61K, C07G, C08G]
5271772 Hazardous chemical decontamination processExpiredFeb 03, 92Dec 21, 93[B08B]
5169990 Preparation of 9,9-bis-(4-hydroxyphenyl)-fluoreneExpiredFeb 11, 92Dec 08, 92[C07C]
5149886 Preparation of 9,9-bis-(4-hydroxyphenyl)-fluoreneExpiredFeb 11, 92Sep 22, 92[C07C]
5108914 Process for the synthesis of L-alpha-amino acidsExpiredDec 19, 89Apr 28, 92[C12P, C07C]
5082944 Production of pyridine-3-sulfonic acidExpiredOct 31, 90Jan 21, 92[C07D]
5075416 Novel processExpiredJan 29, 91Dec 24, 91[C08G, C07C]
5071951 Epoxy hardening agentsExpiredJun 11, 90Dec 10, 91[C08G]
5066806 Novel separation processExpiredAug 13, 90Nov 19, 91[C07D]
5049191 Friction materialExpiredMar 15, 90Sep 17, 91[F16D]
5013591 Building sheeting and method of its manufactureExpiredMay 08, 89May 07, 91[B05D, B32B]
4992599 Novel purification processExpiredDec 13, 89Feb 12, 91[C07C]
4976845 Process for increasing meso phase contents in pitchExpiredSep 01, 89Dec 11, 90[C10C]
4970201 Preservatives for cellulose containing productsExpiredAug 09, 89Nov 13, 90[A01N]
4952563 Waterfree application form of low molecular weight alkali huminatesExpiredMar 01, 88Aug 28, 90[A61K, C07H]

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