LYONDELL PETROCHEMICAL COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 2136
 
  
 
C07F ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM, OR TELLURIUM 268
 
  
 
C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2123
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
C07D HETEROCYCLIC COMPOUNDS 1161
 
  
 
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
5962598 Polyethlene film composition having broad molecular weight distribution and improved bubble stabilityJul 26, 96Oct 05, 99[C08F]
5637659 Method of polymerizing olefins using borabenzene catalystsMay 17, 96Jun 10, 97[C08F]
5554775 Borabenzene based olefin polymerization catalystsJan 17, 95Sep 10, 96[C07F]
5539124 Polymerization catalysts based on transition metal complexes with ligands containing pyrrolyl ringDec 19, 94Jul 23, 96[C07F, C07D, B01J]
5300718 Olefin conversion processJan 29, 93Apr 05, 94[C07C]
5236998 Process for the manufacture of linear polyethylene containing .alpha.-alkene commonomersJun 11, 92Aug 17, 93[C08L]
5120894 Olefin conversion processAug 19, 91Jun 09, 92[C07C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6759493 Transition metal catalysts containing bidentate ligands and method of using and preparing sameExpiredJun 10, 97Jul 06, 04[C08F]
5756611 .alpha.-olefin polymerization catalystsExpiredFeb 21, 97May 26, 98[C08F]
5747404 Polysiloxane supported metallocene catalystsExpiredMay 28, 96May 05, 98[C08F]
5744417 Supported catalystExpiredMay 02, 96Apr 28, 98[C08F]
5578557 Food grade compressor oilExpiredApr 01, 96Nov 26, 96[C10M]
5275718 Lubricant base oil processingExpiredApr 19, 91Jan 04, 94[C10G]
5207894 Removal of aromatic color bodies from aromatic hydrocarbon streamsExpiredOct 11, 91May 04, 93[C01G]
5154840 Environmentally friendly grease compositionsExpiredJan 06, 92Oct 13, 92[C10M]
5141630 Separation process employing two stripping gasesExpiredJul 19, 91Aug 25, 92[C10G, B01D]
5098556 Treatment of off-specification white mineral oil made by two stage hydrogenationExpiredJun 14, 90Mar 24, 92[C10G]
5085839 Apparatus for the prevention of acid gas excursionsExpiredApr 23, 91Feb 04, 92[C01B]
5081325 Purification of unsaturated hydrocarbon streams containing styrenicsExpiredOct 12, 90Jan 14, 92[C07C]
5026934 Method for converting light hydrocarbons to olefins, gasoline and methanolExpiredFeb 12, 90Jun 25, 91[C07C]
4911824 Method for determining and controlling the amount of finely divided particulate solids added to a stream of fluidExpiredJun 07, 89Mar 27, 90[C10G]
4840726 Method for determining and controlling the amount of finely divided particulate solids added to a stream of fluidExpiredApr 15, 88Jun 20, 89[C10G]
4192656 Method and apparatus for halting the advancement of accidental ethylene decomposition in a gas pipelineExpiredDec 15, 77Mar 11, 80[F17D]
4192658 Pipeline flame arrestorExpiredJul 03, 78Mar 11, 80[F17D]
4192657 Method and apparatus for halting the advancement of ethylene decomposition flame frontsExpiredJul 03, 78Mar 11, 80[F17D]

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