ClassID:

97625

C08F4/24 - CPC Classification

Classification description:

Polymerisation catalysts; Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of chromium, molybdenum or tungsten Oxides

Recent Application in this class:
#1
20250154295
2025-05-15

METHOD OF PREPARING A TITANIUM-MODIFIED CR/SILICA CATALYST

#2
20240309125
2024-09-19

POLYETHYLENE FOR USE IN THE PRODUCTION OF CROSSLINKED POLYETHYLENE (PEX)

#3
20240091744
2024-03-21

Aqueous methods for titanating a chromium/silica catalyst

#4
20230159669
2023-05-25

Methods for chromium catalyst activation using oxygen-enriched fluidization gas

#5
20220348701
2022-11-03

Methods of preparing a catalyst

#6
20220267485
2022-08-25

Methods for chromium catalyst activation using oxygen-enriched fluidization gas

#7
20220152586
2022-05-19

Aqueous methods for titanating a chromium/silica catalyst

#8
20220144982
2022-05-12

Methods of preparing a catalyst

#9
20220089794
2022-03-24

Methods of preparing a catalyst

#10
20220056173
2022-02-24

Methods of preparing a catalyst

#11
20220017661
2022-01-20

Rapid activation process and activation treatments for chromium catalysts for producing high melt index polyethylenes

#12
20210261703
2021-08-26

Unimodal polyethylene copolymer and film thereof

#13
20200377630
2020-12-03

Methods of preparing a catalyst

#14
20200369803
2020-11-26

Methods of Preparing a Catalyst

#15
20200262951
2020-08-20

Polyethylene copolymer resins and films

#16
20200239608
2020-07-30

Methods of preparing a catalyst

#17
20200095350
2020-03-26

Rapid activation process and activation treatments for chromium catalysts for producing high melt index polyethylenes

#18
20200079882
2020-03-12

Rating polymerization processes

#19
20200055966
2020-02-20

Polymerization Processes Utilizing Chromium-Containing Catalysts

#20
20200010587
2020-01-09

Methods of preparing a catalyst

#21
20190218319
2019-07-18

Polymerization process

#22
20190218318
2019-07-18

Polymerization process

#23
20190201872
2019-07-04

Aqueous methods for titanating a chromium/silica catalyst

#24
20190194371
2019-06-27

Process for the preparation of ethylene polymers using a number of reactors arranged in series

#25
20190153133
2019-05-23

Methods of preparing a catalyst

#26
20190151826
2019-05-23

Aqueous methods for titanating a chromium/silica catalyst

#27
20190031841
2019-01-31

Polyolefin film with improved toughness

#28
20180305473
2018-10-25

Methods of preparing a catalyst

#29
20180208685
2018-07-26

CATALYST FOR PRODUCTION OF CONJUGATED DIOLEFIN AND METHOD FOR PRODUCING SAME

#30
20180186908
2018-07-05

Methods of preparing a catalyst

#31
20180118861
2018-05-03

Polymerization process

#32
20180088046
2018-03-29

Use of turbidimeter for measurement of solid catalyst system component in a reactor feed

#33
20160355621
2016-12-08

Process for the preparation of ethylene polymers using a number of reactors arranged in series

#34
20160038900
2016-02-11

Process for catalyst activation

#35
20150224465
2015-08-13

Catalyst activator

#36
20130252809
2013-09-26

Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst

#37
20130245209
2013-09-19

Method for activation of chromium containing catalyst precursor for polymerization and the resulting polymerization catalyst

#38
20130244870
2013-09-19

Catalyst activation process

#39
20130203947
2013-08-08

Process for the activation of a supported chromium oxide based catalyst

#40
20130175211
2013-07-11

Additives to chromium catalyst mix tank

#41
20130144017
2013-06-06

Methods of preparing a catalyst

#42
20120238714
2012-09-20

PROCESS FOR THE POLYMERISATION OF OLEFINS

#43
20120232230
2012-09-13

PROCESS FOR MAKING ETHYLENE HOMOPOLYMERS

#44
20120208694
2012-08-16

Preparation of supported chromium catalyst and polymerization process

#45
20120108769
2012-05-03

MULTI-COMPONENT CATALYST SYSTEMS INCLUDING CHROMIUM BASED CATALYSTS AND POLYMERIZATION PROCESSES FOR FORMING POLYOLEFINS

#46
20120108768
2012-05-03

Continuous catalyst activator

#47
20120071614
2012-03-22

Catalyst on silica clad alumina support

#48
20120041160
2012-02-16

Additives to chromium catalyst mix tank

#49
20120010378
2012-01-12

Catalyst Precursor Particles, Their Preparation and Use

#50
20110313116
2011-12-22

Polymerization Process Utilizing Hydrogen

#51
20110237763
2011-09-29

Systems and methods for fabricating polymers

#52
20110230627
2011-09-22

METHOD FOR OPTIMISING THE SUPPLY OF CATALYST SLURRY TO A POLYMERIZATION REACTOR

#53
20110218309
2011-09-08

Preparation of ultra high molecular mass polyethylene and ultra high molecular mass polyethylene having improved crosslink ability prepared thereb

#54
20110201769
2011-08-18

Copolymers Of Ethylene And At Least One Other 1-Olefin, And Process For Their Preparation

#55
20110201768
2011-08-18

System and method for catalyst activation

#56
20110172322
2011-07-14

Branched Low and Medium Density Polyethylene

#57
20110136996
2011-06-09

Methods of preparing a polymerization catalyst

#58
20110010938
2011-01-20

Modified chromium-based catalysts and polymerization processes for using the same

#59
20100317755
2010-12-16

Process for preparation of ethylene polymers for blown films

#60
20100256314
2010-10-07

Catalyst precursor particles, their preparation and use

#61
20100240844
2010-09-23

Methods of preparing a polymerization catalyst

#62
20100222537
2010-09-02

Polymers having broad molecular weight distributions and methods of making the same

#63
20100222527
2010-09-02

Polyethylene film having improved barrier properties and methods of making same

#64
20100160580
2010-06-24

Blow molding polyethylene resins

#65
20100144988
2010-06-10

Monomodal copolymer of ethylene for injection molding and process for its preparation

#66
20100129581
2010-05-27

Process for making ethylene homopolymers

#67
20100093953
2010-04-15

POLYETHYLENE, PROCESS AND CATALYST COMPOSITION FOR THE PREPARATION THEREOF

#68
20100075840
2010-03-25

Methods of activating chromium catalysts

#69
20100069585
2010-03-18

Chromium-Based Catalysts

#70
20090326169
2009-12-31

Process for the preparation of ethylene polymers using a number of reactors arranged in series

#71
20090318638
2009-12-24

Slurry polymerisation process of ethylene in the presence of low amount of scavenger

#72
20090286671
2009-11-19

Process for Preparing a Support for Olefin Polymerization Catalysts

#73
20090275710
2009-11-05

Methods of preparing a polymerization catalyst

#74
20090215970
2009-08-27

Blow molding polyethylene resins

#75
20090198026
2009-08-06

Preparation of supported chromium catalyst and polymerization process

#76
20090164046
2009-06-25

Continuous catalyst activator

#77
20090088318
2009-04-02

Methods of preparing a polymerization catalyst

#78
20090082197
2009-03-26

Methods of preparing a polymerization catalyst

#79
20090062486
2009-03-05

Method of changing between incompatible polymerization catalysts in a gas-phase fluidized-bed reactor

#80
20090048099
2009-02-19

Process for preparing a support for olefin polymerization catalysts

#81
20080299342
2008-12-04

Catalyst Comprising Chromium and Zinc for Olefin Polymerization and Process for Preparing It

#82
20080269437
2008-10-30

Catalyst comprising chromium and zirconium for the polymerization and/or copolymerization of olefins

#83
20080234449
2008-09-25

Catalyst activation and resins therefrom

#84
20080177013
2008-07-24

SUPPORTED, TITANIZED CHROMIUM CATALYST AND ITS USE FOR PREPARING HOMOPOLYMERS AND COPOLYMERS OF ETHYLENE

#85
20080096761
2008-04-24

Preparation of supports for catalysts

#86
20080090976
2008-04-17

Production of broad molecular weight polyethylene

#87
20080051545
2008-02-28

Polymers having broad molecular weight distributions and methods of making the same

#88
20080009407
2008-01-10

Multimodal polyethylene obtained with multilayer chromium catalyst

#89
20070179051
2007-08-02

Preparation of supported catalysts for polymerization

#90
20070142577
2007-06-21

Method of preparing a treated support

#91
20070135592
2007-06-14

Polymer of ethylene

#92
20070099794
2007-05-03

Method of preparing a treated support

#93
20070065613
2007-03-22

Plastics pipes of polyolefins

#94
20070032617
2007-02-08

Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization

#95
20070027276
2007-02-01

Blow molding polyethylene resins

#96
20060183630
2006-08-17

Production of broad molecular weight polyethylene

#97
20060172884
2006-08-03

Supported, titanized chromium catalyst and its use for preparing homopolymers and copolymers of ethylene

#98
20060155081
2006-07-13

Chromium-based catalysts in mineral oil for production of polyethylene

#99
20060122340
2006-06-08

Selection of polymerization catalysts and apparatus for carrying this out

#100
20060089468
2006-04-27

Method of preparing a treated support

#101
20060079656
2006-04-13

Olefin polymers, method of making, and use thereof

#102
20060063666
2006-03-23

Supported chromium catalyst and its use for preparing homopolymers and copolymers of ethylene

#103
20050267271
2005-12-01

Bimetallic catalyst for producing polyethylene resins with bimodal molecular weight distribution, its preparation and use

#104
20050255987
2005-11-17

Methods of activating chromium catalysts

#105
20050239976
2005-10-27

Polymers having broad molecular weight distributions and methods of making the same

#106
20050239638
2005-10-27

Catalyst systems comprising a calcined chromium catalyst and a non-transition metal cyclopentadienyl cocatalyst

#107
20050192177
2005-09-01

Catalyst activation and resins therefrom

#108
20050159297
2005-07-21

Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization

#109
20050137365
2005-06-23

Blow molding resins with improved ESCR

#110
20050119426
2005-06-02

High molecular weight HDPE resins

#111
20050090610
2005-04-28

Process for the gas phase polymerisation of olefins

#112
20050019515
2005-01-27

Plastics pipes of polyolefins