ClassID:

34698

B01J2531/49 - CPC Classification

Classification description:

Additional information regarding catalytic systems classified in; Complexes comprising metals of Group IV (IVA or IVB) as the central metal Hafnium

Recent Application in this class:
#1
20260131320
2026-05-14

HYDROCARBYL SILYL-SUBSTITUTED ANSA-METALLOCENES AND PROCESS FOR PREPARING LOW MELT ELASTICITY POLYOLEFINS

#2
20260098112
2026-04-09

METHOD OF MAKING A MORPHOLOGY-IMPROVED POLYETHYLENE POWDER

#3
20260078077
2026-03-19

APPARATUS AND SYSTEMS FOR IMPROVED ALKYL ESTER PRODUCTION FROM FEEDSTOCKS CONTAINING ORGANIC ACIDS USING LOW PRESSURE ALKYLATION

#4
20250243134
2025-07-31

CATALYTIC HYDROGENOLYSIS OF A POLYMER

#5
20250135445
2025-05-01

MAIN CATALYST FOR PREPARING POLY(4-METHYL-1-PENTENE) AND USE OF MAIN CATALYST

#6
20240300983
2024-09-12

Method of Making Metal-Organic Frameworks With a Precursor and Crystallization Aid

#7
20240158334
2024-05-16

APPARATUS AND SYSTEMS FOR IMPROVED ALKYL ESTER PRODUCTION FROM FEEDSTOCKS CONTAINING ORGANIC ACIDS USING LOW PRESSURE ALKYLATION

#8
20220297100
2022-09-22

Ligand-directed reticular synthesis of metal-organic frameworks having edge-transitive ALB network topologies

#9
20220111373
2022-04-14

METAL ORGANIC FRAMEWORK

#10
20220111372
2022-04-14

METAL ORGANIC FRAMEWORK

#11
20220111371
2022-04-14

Method of using metal organic framework

#12
20220111370
2022-04-14

METHOD OF USING METAL ORGANIC FRAMEWORK

#13
20220062879
2022-03-03

Method for preparing cocatalyst compound using anhydrous hydrocarbon solvent

#14
20220048016
2022-02-17

Supported catalyst systems and processes for use thereof

#15
20210402384
2021-12-30

Hexahydrocyclopenta[e]-as-indacen-1-yl and octahydrobenzo[e]-as-indacen-1-yl based catalyst complexes and process for use thereof

#16
20210269567
2021-09-02

Ethylene-a-olefin-diene elastomers and methods of making them

#17
20210121863
2021-04-29

Catalyst Systems Including Salan Catalyst and Non-Coordinating Anion Type Activator Containing Cation Having Alkyl Groups and uses Thereof

#18
20210023540
2021-01-28

Catalyst systems and polymerization processes for using the same

#19
20200255561
2020-08-13

Supported transition metal bis(phenolate) complexes and their use as catalysts for olefin polymerization

#20
20200255553
2020-08-13

Transition metal bis(phenolate) complexes and their use as catalysts for olefin polymerization

#21
20200254431
2020-08-13

Bis(aryl phenolate) lewis base catalysts and methods thereof

#22
20200179914
2020-06-11

METHOD FOR PRODUCING CATALYST

#23
20200101450
2020-04-02

C1,C2-bridged ligands and catalysts

#24
20200095347
2020-03-26

Compound and transition metal compound

#25
20200031958
2020-01-30

Polymerization catalysts with improved ethylene enchainment

#26
20190366315
2019-12-05

Metallocenes with Si—Si bridges

#27
20190283009
2019-09-19

Metallocene catalysts, catalyst systems, and methods for using the same

#28
20190256441
2019-08-22

Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid medium

#29
20190248935
2019-08-15

Ethylene-a-olefin-diene elastomers and methods of making them

#30
20190248934
2019-08-15

Ethylene-a-olefin-diene Elastomers and Methods of Making Them

#31
20190169325
2019-06-06

High-density ethylene-based polymer using supported hybrid metallocene catalyst, and manufacturing method therefor

#32
20190169323
2019-06-06

High-processability high-density ethylene-based polymer using hybrid supported metallocene catalyst, and preparation method therefor

#33
20190168203
2019-06-06

Catalyst systems and polymerization processes for using the same

#34
20190161565
2019-05-30

Modified catalyst supports

#35
20190161559
2019-05-30

Catalyst Systems and Polymerization Processes for Using the Same

#36
20190152897
2019-05-23

Hafnium-based metal-organic frameworks as epoxide ring-opening catalysts

#37
20190144570
2019-05-16

Metal complexes

#38
20190077727
2019-03-14

Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid medium

#39
20190025200
2019-01-24

Methods for determining transition metal compound concentrations in multicomponent liquid systems

#40
20190002366
2019-01-03

Production of olefin dimers

#41
20180361370
2018-12-20

Stabilization of active metal catalysts at metal-organic framework nodes for highly efficient organic transformations

#42
20180282443
2018-10-04

Metallocene-catalyzed polyalpha-olefins

#43
20180223010
2018-08-09

Ligand compound and transition metal compound

#44
20180194879
2018-07-12

Process for reducing the light oligomer content of polypropylene oils

#45
20180142047
2018-05-24

Process to produce modified clay, supported metallocene polymerization catalyst

#46
20170348682
2017-12-07

Method for the conversion of nitrous acid to dinitrogen gas

#47
20170267796
2017-09-21

Five-coordinate bis-phenylphenoxy catalysts for the preparation of ethylene-based polymers

#48
20170183434
2017-06-29

Catalyst composition, methods of preparation and use in a polymerization process

#49
20170128761
2017-05-11

Metal organic frameworks for the catalytic detoxification of chemical warfare nerve agents

#50
20170036200
2017-02-09

1-hexene production process

#51
20170029537
2017-02-02

Silyl bis(hexamethylindenyl) complexes of group IVA metals as polymerization catalysts

#52
20170022310
2017-01-26

Continuity compositions and methods of making and using the same

#53
20160175827
2016-06-23

Metal organic frameworks for the catalytic detoxification of chemical warfare nerve agents

#54
20160152903
2016-06-02

Process for the preparation of branched polyolefins for lubricant applications

#55
20160108146
2016-04-21

Transition metal based pro-catalyst and a process for its preparation

#56
20150361192
2015-12-17

Methods for preparing catalyst systems with increased productivity

#57
20150239916
2015-08-27

Transition metal compound having heteroatom, catalystic composition including the same, and method for preparing polymers using the same

#58
20150224490
2015-08-13

Hydrosilylation Catalysts Made With Terdentate Nitrogen Ligands And Compositions Containing The Catalysts

#59
20150203617
2015-07-23

Methods for producing fluorided-chlorided silica-coated alumina activator-supports and catalyst systems containing the same

#60
20150148505
2015-05-28

Amidinate and guanidinate complexes, their use as chain transfer polymerization catalysts and long chain alcohols obtained by such process

#61
20150099679
2015-04-09

Processes for preparing low viscosity lubricants

#62
20140296456
2014-10-02

Catalyst systems for production of alpha olefin oligomers and polymers

#63
20140275329
2014-09-18

Ruthenium containing hydrosilylation catalysts and compositions containing the catalysts

#64
20140206869
2014-07-24

Iridium containing hydrosilylation catalysts and compositions containing the catalysts

#65
20140183398
2014-07-03

Nickel containing hydrosilylation catalysts and compositions containing the catalysts

#66
20140051898
2014-02-20

Diesel and jet fuels based on the oligomerization of butene

#67
20140038486
2014-02-06

Catalyst system, process for olefin polymerization, and polymer compositions produced therefrom

#68
20140018565
2014-01-16

Method for producing transition metal complex, catalyst for trimerization, method for producing 1-hexene, method for producing substituted cyclopentadiene compound (2)

#69
20140018506
2014-01-16

Bridged metallocene catalysts

#70
20130253236
2013-09-26

Homogeneous metallocene ziegler-natta catalysts for the oligomerization of olefins in aliphatic-hydrocarbon solvents

#71
20130253152
2013-09-26

Preparation of a solid catalyst system

#72
20130225772
2013-08-29

Modified catalyst supports

#73
20130217941
2013-08-22

Process for oligomerization of olefins that uses a catalytic composition that comprises an organometallic complex that contains an alkoxy ligand that is functionalized by a heteroatom

#74
20130211018
2013-08-15

Modified catalyst supports

#75
20130197180
2013-08-01

Enhanced catalyst performance for production of vinyl terminated propylene and ethylene/propylene macromers

#76
20130172498
2013-07-04

Catalyst systems for production of alpha olefin oligomers and polymers

#77
20130053523
2013-02-28

Polymerization process for producing bimodal polymers

#78
20130046066
2013-02-21

METHOD OF PREPARING A POLYMER AND COMPOSITIONS THEREFOR

#79
20130045863
2013-02-21

COMPLEX AND METHOD OF PREPARATION

#80
20130045862
2013-02-21

Process for the preparation of a solid metallocene catalyst system and its use in polymerisation of olefins

#81
20130005931
2013-01-03

Ethylenic polymer

#82
20120325473
2012-12-27

CATALYTIC POLYMER BEAD COMPOSITIONS; PROCESSIING FOR THEIR PRODUCTION; AND THEIR USE IN GENERATING AND EXTRACTING NATURAL GAS, LIGHT CRUDE OIL, OR SEQUENCES OR MIXTURES THEREOF

#83
20120289670
2012-11-15

Fluorinated Alkoxy-Imino Catalyst Components

#84
20120271030
2012-10-25

Catalyst and process

#85
20120271016
2012-10-25

Catalysts

#86
20120245313
2012-09-27

Enhanced catalyst performance for production of vinyl terminated propylene and ethylene/propylene macromers

#87
20120245311
2012-09-27

Catalysts and methods of use thereof to produce vinyl terminated polymers

#88
20120209047
2012-08-16

HOMOGENEOUS METALLOCENE ZIEGLER-NATTA CATALYSTS FOR THE OLIGOMERIZATION OF OLEFINS IN ALIPHATIC-HYDROCARBON SOLVENTS

#89
20120184693
2012-07-19

ETHYLENE POLYMER PREPARATION METHOD

#90
20120184431
2012-07-19

TRANSITION METAL COMPLEX, PREPARATION METHOD FOR SAID TRANSITION METAL COMPLEX, TRIMERIZATION CATALYST, PREPARATION METHOD FOR 1-HEXENE, PREPARATION METHOD FOR ETHYLENE POLYMER, SUBSTITUTED CYCLOPENTADIENE COMPOUND, AND PREPARATION METHOD FOR SAID SUBSTITUTED CYCLOPENTADIENE COMPOUND

#91
20120116034
2012-05-10

SOLUTION POLYMERIZATION PROCESS AND PROCATALYST CARRIER SYSTEMS USEFUL THEREIN

#92
20120108764
2012-05-03

Half-metallocene catalyst compositions and their polymer products

#93
20120095175
2012-04-19

PREPARATION AND USE OF TETRASUBSTITUTED FLUORENYL CATALYSTS FOR POLYMERIZATION OF OLEFINS

#94
20120071616
2012-03-22

Pyridyldiamido transition metal complexes, production and use thereof

#95
20120029159
2012-02-02

Polydentate heteroatom ligand containing metal complexes, catalysts and methods of making and using the same

#96
20110312489
2011-12-22

Fluorinated Alkoxy-Imino Catalyst Components

#97
20110306741
2011-12-15

Synthesis of substituted tetrahydroindenyl complexes

#98
20110294972
2011-12-01

Olefin Polymerization Catalysts

#99
20110287927
2011-11-24

PROCESS FOR OLIGOMERIZATION OF OLEFINS THAT USES A CATALYTIC COMPOSITION THAT COMPRISES AN ORGANOMETALLIC COMPLEX THAT CONTAINS AN ALKOXY LIGAND THAT IS FUNCTIONALIZED BY A HETEROATOM

#100
20110224391
2011-09-15

Pyridyldiamido transition metal complexes, production and use thereof

#101
20110207977
2011-08-25

METHOD FOR PRODUCING A-OLEFIN OLIGOMER, A-OLEFIN OLIGOMER, AND LUBRICATING OIL COMPOSITION

#102
20110190460
2011-08-04

Polymerization process for producing bimodal polymers

#103
20110098422
2011-04-28

Polyethylene compositions having improved properties

#104
20110082323
2011-04-07

OLIGOMERIZATION OF OLEFIN WAXES USING METALLOCENE-BASED CATALYST SYSTEMS

#105
20110077370
2011-03-31

Continuity additives and their use in polymerization processes

#106
20110065874
2011-03-17

Half-metallocene catalyst compositions and their polymer products

#107
20110004036
2011-01-06

HETEROGENEOUS DIMERIZATION OF ALPHA-OLEFINS WITH ACTIVATED METALLOCENE COMPLEXES

#108
20100298511
2010-11-25

Metallocene catalysts and their use in polymerization processes

#109
20100298510
2010-11-25

Catalyst system and process for olefin polymerization

#110
20100280199
2010-11-04

COMPOSITIONS THAT CAN PRODUCE POLYMERS

#111
20100222516
2010-09-02

Tactic polymer polymerization process using chiral catalysts

#112
20100168377
2010-07-01

Catalytic conversion of amide compounds to methyl ether polymers and methyl ether ladder polymers

#113
20100168351
2010-07-01

Catalyst complex and process for producing multimodal molecular weight polyolefins

#114
20100029873
2010-02-04

Catalyst system and process for olefin polymerization

#115
20100029871
2010-02-04

Catalyst system, process for olefin polymerization, and polymer compositions produced therefrom

#116
20100029472
2010-02-04

Fluorinated alkoxy-imino catalyst components

#117
20100010174
2010-01-14

Half-metallocene catalyst compositions and their polymer products

#118
20090259085
2009-10-15

Semi-rigid linked diamines, precursors therefor, and transition metal diamido complexes as catalysts for olefin polymerization processes

#119
20090227762
2009-09-10

NOVEL CATALYTIC MATERIALS AND THEIR USE IN THE PREPARATION OF POLYMERIC MATERIALS

#120
20090221770
2009-09-03

Polydentate heteroatom ligand containing metal complexes, catalysts and methods of making and using the same

#121
20090198078
2009-08-06

Process for preparing a monocyclopentadienyl compound

#122
20090176949
2009-07-09

Transition metal complexes, catalyst compositions containing the same, and methods for preparing ethylene homopolymers or copolymers of ethylene and α-olefins using the same

#123
20090176948
2009-07-09

Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers

#124
20090012330
2009-01-08

Method for producing optically active alcohol compound

#125
20090005526
2009-01-01

Tridentate metal catalyst for olefin polymerization

#126
20080293895
2008-11-27

Polymerization process using a supported, treated catalyst system

#127
20080293562
2008-11-27

Preparation of ultra high molecular weight linear low density polyethylene

#128
20080287721
2008-11-20

Catalysts for olefin polymerization

#129
20080281139
2008-11-13

Catalyst for Propylene Dimerization and Dimerization Method

#130
20080269470
2008-10-30

Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom

#131
20080214768
2008-09-04

Preparation of ultra high molecular weight linear low density polyethylene

#132
20080200708
2008-08-21

Preparation of partially hydrogenated rac-ansa-metallocene complexes

#133
20080081887
2008-04-03

Preparation of ultra high molecular weight linear low density polyethylene

#134
20080051537
2008-02-28

Supported Bis(Hydroxylarylaryloxy) Catalysts For Manufacture Of Polymers

#135
20080026935
2008-01-31

Preparation and use of tetrasubstituted fluorenyl catalysts for polymerization of olefins

#136
20080004460
2008-01-03

Polymerization catalysts and process for producing bimodal polymers in a single reactor

#137
20070117943
2007-05-24

Tridentate metal catalyst for olefin polymerization

#138
20070117713
2007-05-24

Tridentate metal catalyst for olefin polymerization

#139
20070105712
2007-05-10

Process for manufacturing ultra high molecular weight polymers using novel bridged metallocene catalysts

#140
20070060722
2007-03-15

Polymerization catalysts and process for producing bimodal polymers in a single reactor

#141
20070055028
2007-03-08

Preparation of polymerization catalyst activators utilizing indole-modified silica supports

#142
20070043184
2007-02-22

Bidentate catalyst for olefin polymerization, methods of forming such and products therefrom

#143
20070043183
2007-02-22

Preparation and use of tetrasubstituted fluorenyl catalysts for polymerization of olefins

#144
20070010648
2007-01-11

Catalyst for manufacture of esters

#145
20060241255
2006-10-26

Supported catalysts for manufacture of polymers

#146
20060211892
2006-09-21

Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom

#147
20060155102
2006-07-13

Catalyst and process

#148
20060128559
2006-06-15

Transition metal catalysts for (co) polymerizing of olefinic monomers

#149
20060122344
2006-06-08

Organometallic fluorenyl compounds, preparations, and use

#150
20060094841
2006-05-04

Organometal catalyst compositions

#151
20060089470
2006-04-27

Supported metallocene catalysts and their use in producing stereospecific polymers

#152
20060052554
2006-03-09

Bridged bi-aromatic catalysts, complexes, and methods of using the same

#153
20060020099
2006-01-26

Catalyst and process

#154
20050266982
2005-12-01

Activated catalyst systems from substituted dialuminoxane complexes

#155
20050261449
2005-11-24

Heterocyclic substituted metallocene compounds for olefin polymerization

#156
20050256280
2005-11-17

Catalyst preparation method

#157
20050250956
2005-11-10

Bridged biscyclopentadienyl ligands and method of preparation

#158
20050239981
2005-10-27

Phosphorus bridged metallocene compounds for olefin polymerization

#159
20050239980
2005-10-27

Phosphorus substituted metallocene compounds for olefin polymerization

#160
20050197470
2005-09-08

Compositions that can produce polymers

#161
20050192459
2005-09-01

Oxidation of aromatic hydrocarbons using brominated anthracene promoters

#162
20050164872
2005-07-28

Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom

#163
20050159302
2005-07-21

Catalyst support method and polymerization with supported catalysts

#164
20050148744
2005-07-07

Polymerization process using a supported, treated catalyst system

#165
20050148743
2005-07-07

Supported activator

#166
20050137366
2005-06-23

Organometal compound catalyst

#167
20050107246
2005-05-19

Supported catalyst systems

#168
20050096439
2005-05-05

Substituted polycyclic cyclopentadienes and method for their preparation

#169
20050080281
2005-04-14

Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom

#170
20050049140
2005-03-03

Activated catalyst systems from substituted dialuminoxane complexes

#171
18195794
2023-12-26

Processes and systems for improved alkyl ester production from feedstocks containing organic acids using low pressure alkylation

#172
17880483
2023-11-14

Processes for organic acid alkyl ester production using low pressure alkylation