Alt; Helmut G.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Alt; Helmut G..The latest application filed is for "multinuclear metallocene catalyst compound for olefin polymerisation and copolymerisation and method for making thereof".

Company Profile

0.55.18

Alt; Helmut G. - Bayreuth DE
Alt; Helmut G. - D-95445 Bayreuth DE
Alt; Helmut G. - Bartlesville OK

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Multinuclear Metallocene Catalyst Compound For Olefin Polymerisation And Copolymerisation And Method For Making Thereof App 20140296455 - Al-Shammari; Haif ; et al.	2014-10-02
Organometallic complexes as catalyst precursors for selective olefin dimerization and processes therefor Grant 8,816,146 - Englmann , et al. August 26, 2	2014-08-26
Selective Olefin Dimerization With Supported Metal Complexes Activated By Alkylaluminum Compounds Or Ionic Liquids App 20130310619 - Dotterl; Matthias ; et al.	2013-11-21
Selective olefin dimerization with supported metal complexes activated by alkylaluminum compounds or ionic liquids Grant 8,487,153 - Dotterl , et al. July 16, 2	2013-07-16
Catalyst complex and process for producing multimodal molecular weight polyolefins Grant 8,420,563 - Palackal , et al. April 16, 2	2013-04-16
Catalyst precursor for the production of olefins with an odd number of carbons atoms, process for its preparation and production method for such olefins Grant 8,304,504 - Seitz , et al. November 6, 2	2012-11-06
Buffered Ionic Liquids For Olefin Dimerization App 20120136189 - Dotterl; Matthias ; et al.	2012-05-31
Hydrocarbon conversion Grant 7,923,396 - Boehmer , et al. April 12, 2	2011-04-12
Homogeneous Dimerization Catalysts Based on Vanadium App 20110071294 - Lang; Julian R.V. ; et al.	2011-03-24
Organometallic Complexes As Catalyst Precursors For Selective Olefin Dimerization And Processes Therefor App 20110004040 - Englmann; Tanja ; et al.	2011-01-06
Heterogeneous Dimerization Of Alpha-olefins With Activated Metallocene Complexes App 20110004036 - Englmann; Tanja ; et al.	2011-01-06
Selective Olefin Dimerization With Supported Metal Complexes Activated By Alkylaluminum Compounds Or Ionic Liquids App 20110004039 - DOTTERL; Matthias ; et al.	2011-01-06
Catalyst Precursor For The Production Of Olefins With An Odd Number Of Carbons Atoms, Process For Its Preparation And Production Method For Such Olefins App 20100016529 - Seitz; Marcus ; et al.	2010-01-21
Ch Activation/dehydrogenation Of Hydrocarbons App 20080242911 - Boehmer; Ingrid ; et al.	2008-10-02
Additive Component for the Improvement of the Performance of Olefin Polymerisation Catalysts App 20070254803 - Alt; Helmut G. ; et al.	2007-11-01
Organometallic fluorenyl compounds, preparations, and use Grant 7,230,128 - Alt , et al. June 12, 2	2007-06-12
Metallocenes, polymerization catalyst systems, their preparation, and use Grant 6,992,035 - Welch , et al. January 31, 2	2006-01-31
Hydrocarbon conversion App 20050274647 - Boehmer, Ingrid ; et al.	2005-12-15
CH activation/dehydrogenation of hydrocarbons App 20050277799 - Boehmer, Ingrid ; et al.	2005-12-15
Complexes of pyridyldiimines with vanadium and other transition metals, and their use as olefin oligomerization and polymerization catalysts App 20030144438 - Schmidt, Roland ; et al.	2003-07-31
Amido half sandwich metallocene catalyst system and its preparation and use App 20030105252 - Reb, Alexander ; et al.	2003-06-05
Oligomeric metallocenes and their use App 20030060358 - Licht, Erik ; et al.	2003-03-27
Metallocenes, polymerization catalyst systems, their preparation, and use Grant 6,509,427 - Welch , et al. January 21, 2	2003-01-21
Complexes of pyridldiimines with vanadium and other transition metals, and their use as olefin oligomerization and polymerization catalysts Grant 6,458,905 - Schmidt , et al. October 1, 2	2002-10-01
Multicyclic metallocycle metallocenes and their use App 20020065190 - Licht, Erik ; et al.	2002-05-30
Metallocycle metallocenes and their use App 20020039960 - Alt, Helmut G. ; et al.	2002-04-04
Multicyclic metallocycle metallocenes and their use Grant 6,340,651 - Licht , et al. January 22, 2	2002-01-22
Metallocenes, polymerization catalyst systems, their preparation, and use App 20010056033 - Koppl, Alexander ; et al.	2001-12-27
Polymerization catalyst systems, their preparation, and use Grant 6,268,453 - Koppl , et al. July 31, 2	2001-07-31
Method for making and using a supported metallcene catalyst system Grant 6,221,981 - Jung , et al. April 24, 2	2001-04-24
Process for producing an olefin polymer using a metallocene Grant 6,187,880 - Welch , et al. February 13, 2	2001-02-13
Polymerization catalyst systems, their preparation, and use Grant 6,159,888 - Welch , et al. December 12, 2	2000-12-12
Polyethylenes containing a unique distribution of short chain branching Grant 6,153,716 - Welch , et al. November 28, 2	2000-11-28
Polymerization catalysts and processes therefor Grant 5,932,670 - Koppl , et al. August 3, 1	1999-08-03
Bridged fluorenyl/indenyl metallocenes and the use thereof Grant 5,886,202 - Jung , et al. March 23, 1	1999-03-23
Organo omega-alkenyl cyclopentacarbyl silane compounds Grant 5,856,547 - Jung , et al. January 5, 1	1999-01-05
(Omega-alkenyl) (cyclopentacarbyl) metallocene compounds Grant 5,854,363 - Jung , et al. December 29, 1	1998-12-29
Substituted indenyl unbridged metallocenes Grant 5,780,659 - Schmid , et al. July 14, 1	1998-07-14
Process for preparing a bridged ligand and said bridged ligand Grant 5,728,908 - Welch , et al. March 17, 1	1998-03-17
Processes to produce metallocene compounds and polymerization processes therewith Grant 5,726,264 - Jung , et al. March 10, 1	1998-03-10
Method for producing polymer of ethylene Grant 5,710,224 - Alt , et al. January 20, 1	1998-01-20
Method for making and using a supported metallocene catalyst system Grant 5,705,578 - Peifer , et al. January 6, 1	1998-01-06
Organoaluminoxy product, catalyst systems, preparation, and use Grant 5,670,589 - Geerts , et al. September 23, 1	1997-09-23
Olefin polymerization Grant 5,668,230 - Schertl , et al. September 16, 1	1997-09-16
Metallocene preparation and use Grant 5,654,454 - Peifer , et al. August 5, 1	1997-08-05
Bis fluorenyl metallocenes and use thereof Grant 5,637,744 - Alt , et al. June 10, 1	1997-06-10
Metallocene compounds and preparation thereof containing terminal alkynes Grant 5,631,203 - Welch , et al. May 20, 1	1997-05-20
Process of polymerizing olefins using diphenylsilyl or dimethyl tin bridged 1-methyl fluorenyl metallocenes Grant 5,631,335 - Alt , et al. May 20, 1	1997-05-20
Organometallic fluorenyl compounds and use thereof in olefin polymerization Grant 5,627,247 - Alt , et al. May 6, 1	1997-05-06
Metallocenes and processes therefor and therewith Grant 5,616,752 - Patsidis , et al. April 1, 1	1997-04-01
Organometallic fluorenyl compounds and use thereof in an alpha-olefin polymerization process Grant 5,571,880 - Alt , et al. November 5, 1	1996-11-05
Vinly-substituted bridged metallocenes Grant 5,565,592 - Patsidis , et al. October 15, 1	1996-10-15
Cyclopentadienyl-type ligands, metallocenes, catalyst systems, preparation, and use Grant 5,563,284 - Frey , et al. October 8, 1	1996-10-08
Process for preparing cyclopentadienyl-type ligands Grant 5,554,795 - Frey , et al. September 10, 1	1996-09-10
High activity ethylene selective metallocenes Grant 5,541,272 - Schmid , et al. July 30, 1	1996-07-30
Method for making and using a supported metallocene catalyst system Grant 5,498,581 - Welch , et al. March 12, 1	1996-03-12
Process for preparing catalyst system Grant 5,492,978 - Peifer , et al. February 20, 1	1996-02-20
Polymer bound metallocenes Grant 5,492,975 - Peifer , et al. February 20, 1	1996-02-20
Polymer bound ligands, polymer bound metallocenes, catalyst systems, preparation, and use Grant 5,473,020 - Peifer , et al. December 5, 1	1995-12-05
Metallocenes and processes therefor and therewith Grant 5,466,766 - Patsidis , et al. * November 14, 1	1995-11-14
Syndiotactic polypropylene prepared using silyl bridged metallocenes Grant 5,459,218 - Palackal , et al. October 17, 1	1995-10-17
Organometallic fluorenyl compounds, preparation, and use Grant 5,451,649 - Zenk , et al. September 19, 1	1995-09-19
Organometallic fluorenyl compounds, preparation, and use Grant 5,436,305 - Alt , et al. July 25, 1	1995-07-25
Method for preparing cyclopentadienyl-type ligands and metallocene compounds Grant 5,420,320 - Zenk , et al. May 30, 1	1995-05-30
Cyclopentadiene type compounds and method for making Grant 5,406,013 - Patsidis , et al. * April 11, 1	1995-04-11
Olefin polymerization using silyl-bridged metallocenes Grant 5,401,817 - Palackal , et al. March 28, 1	1995-03-28
Metallocenes and processes therefor and therewith Grant 5,399,636 - Alt , et al. March 21, 1	1995-03-21
Cyclopentadiene type compounds and method for making Grant 5,393,911 - Patsidis , et al. * February 28, 1	1995-02-28
Fluorene compounds Grant 5,210,352 - Alt , et al. May 11, 1	1993-05-11
Cyclopentadiene type compounds and method for making Grant 5,191,132 - Patsidis , et al. March 2, 1	1993-03-02

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