Polysar Rubber Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 9116
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 1137
 
  
 
C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS121
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 1119
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5407974 Solution polymer recovery processMar 11, 94Apr 18, 95[C08F, C08C]
5371313 Purification of hydrocarbon streamsNov 24, 93Dec 06, 94[C07C]
5362817 Polyisobutylene based block copolymersAug 18, 93Nov 08, 94[C08F]
5276094 Compositions of butyl elastomers and block copolymers of polyisobutyleneNov 12, 92Jan 04, 94[C08F, C08L]
5260383 Polyisobutylene based block copolymersApr 17, 91Nov 09, 93[C08F]
5258467 Catalytic solution hydrogenation of nitrile rubberSep 02, 92Nov 02, 93[C08F]
5241013 Catalytic hydrogenation of nitrile rubberSep 02, 92Aug 31, 93[C08F]
5227463 Process for the manufacture of functionalized resins from styrene, divinyl benzene and alkane dithiolJun 12, 92Jul 13, 93[C08G]
5210151 Hydrogenation of nitrile rubberSep 02, 92May 11, 93[C08F]
5208294 Hydrogenated nitrile vulcanizatesJun 20, 91May 04, 93[C08F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5428119 Process for polybutadiene production using catalyst with high activityExpiredNov 09, 93Jun 27, 95[C08F]
5412045 Preparation of high cis-1,4-polybutadiene with reduced gelExpiredSep 16, 94May 02, 95[C08F]
5397851 Process for cis-1,4-polybutadiene production with reduced gel formationExpiredNov 09, 93Mar 14, 95[C08F]
5342908 Process for preparing halobutyl-type polymerExpiredFeb 05, 93Aug 30, 94[C08F]
5307695 Water sampling unitExpiredMay 27, 92May 03, 94[G01N]
5264494 Halogenated butyl rubber graft copolymersExpiredMay 15, 91Nov 23, 93[C08L]
5237015 Core-shell polymer for use in tire treadsExpiredNov 04, 91Aug 17, 93[C08F]
5213144 Valve opening deviceExpiredJun 11, 92May 25, 93[B67C, B65B]
5144832 Flow characterization apparatus and processExpiredMar 25, 91Sep 08, 92[G01N]
5118716 Ion exchange resins having carbodithioate groupsExpiredOct 05, 90Jun 02, 92[C08F]
5075388 Amine modified hydrogenation of nitrile rubberExpiredDec 13, 90Dec 24, 91[C08F]
5068275 Plasticized hydrogenated nitrile rubberExpiredOct 05, 90Nov 26, 91[C08K]
5015696 Chlorinated EPDM with superior stabilityExpiredJul 30, 90May 14, 91[C08F]

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