Chang; Main

Patent Applications and Registrations

Patent applications and USPTO patent grants for Chang; Main.The latest application filed is for "internal donor structure for olefin polymerization catalysts and methods of making and using same".

Company Profile

0.49.29

Chang; Main - Houston TX

*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
Internal donor structure for olefin polymerization catalysts and methods of making and using same Grant 10,144,790 - Chang De	2018-12-04
Combined internal donor system for Ziegler-Natta polyolefin catalysts and methods of making and using same Grant 9,738,736 - Marin , et al. August 22, 2	2017-08-22
Internal Donor Structure For Olefin Polymerization Catalysts And Methods Of Making And Using Same App 20170121433 - Chang; Main	2017-05-04
Internal donor structure for olefin polymerization catalysts and methods of making and using same Grant 9,567,410 - Chang February 14, 2	2017-02-14
Ethylene polymerization catalysts Grant 9,562,119 - Chang , et al. February 7, 2	2017-02-07
Internal Donor Structure For Olefin Polymerization Catalysts And Methods Of Making And Using Same App 20160145358 - Chang; Main	2016-05-26
Mixed internal donor structures for 1-olefin polymerization catalysts Grant 9,284,392 - Chang March 15, 2	2016-03-15
Combined Internal Donor System For Ziegler-natta Polyolefin Catalysts And Methods Of Making And Using Same App 20160046740 - MARIN; Vladimir P. ; et al.	2016-02-18
Internal donor structure for olefin polymerization catalysts and methods of making and using same Grant 9,217,047 - Chang December 22, 2	2015-12-22
Internal and external donor compounds for olefin polymerization catalysts IV Grant 8,933,180 - Chang January 13, 2	2015-01-13
Internal And External Donor Compounds For Olefin Polymerization Catalysts Iv App 20140275451 - CHANG; Main	2014-09-18
Mixed Internal Donor Structures For 1-olefin Polymerization Catalysts App 20140275452 - CHANG; Main	2014-09-18
Internal Donor Structure For Olefin Polymerization Catalysts And Methods Of Making And Using Same App 20140235805 - Chang; Main	2014-08-21
Internal donor structure for olefin polymerization catalysts and methods of making and using same Grant 8,765,626 - Chang July 1, 2	2014-07-01
Internal and external donor compounds for olefin polymerization catalysts II Grant 8,569,195 - Chang October 29, 2	2013-10-29
New Internal Donors For Ethylene Polymerization Catalysts And Methods Of Making And Using Same Ii App 20130231447 - CHANG; Main	2013-09-05
Internal Donor Structure for Olefin Polymerization Catalysts and Methods of Making and Using Same App 20130137568 - Chang; Main	2013-05-30
Internal and external donor compounds for olefin polymerization catalysts III Grant 8,318,626 - Chang November 27, 2	2012-11-27
High activity catalyst component for olefin polymerization and method of using the same Grant 8,227,370 - Chang July 24, 2	2012-07-24
Internal and external donor compounds for olefin polymerization catalysts Grant 8,211,819 - Chang July 3, 2	2012-07-03
High Activity Catalyst Component for Olefin Polymerization and Method of Using the Same App 20120116031 - Chang; Main	2012-05-10
Ethylene Polymerization Catalysts App 20110294970 - Chang; Main ; et al.	2011-12-01
Internal and External Donor Compounds for Olefin Polymerization Catalysts III App 20110213106 - Chang; Main	2011-09-01
Internal And External Donor Compounds For Olefin Polymerization Catalysts Ii App 20110207901 - Chang; Main	2011-08-25
Internal donor for olefin polymerization catalysts Grant 8,003,559 - Chang August 23, 2	2011-08-23
Internal donor for olefin polymerization catalysts Grant 8,003,558 - Chang August 23, 2	2011-08-23
Internal and external donor compounds for olefin polymerization catalysts App 20110152481 - Chang; Main	2011-06-23
Supported catalyst for olefin polymerization Grant 7,700,513 - Zhu , et al. April 20, 2	2010-04-20
Internal Donor For Olefin Polymerization Catalysts App 20100029870 - Chang; Main	2010-02-04
Internal Donor For Olefin Polymerization Catalysts App 20090286672 - Chang; Main	2009-11-19
Supported catalyst for olefin polymerization Grant 7,326,757 - Zhu , et al. February 5, 2	2008-02-05
Supported Catalyst For Olefin Polymerization App 20070243998 - Zhu; Zhidong ; et al.	2007-10-18
Supported catalyst for olefin polymerization App 20070021573 - Zhu; Zhidong ; et al.	2007-01-25
High activity and good hydrogen response Ziegler-Natta polyethylene catalyst Grant 7,153,803 - Zhu , et al. December 26, 2	2006-12-26
Spherical catalyst for olefin polymerization Grant 7,135,531 - Zhu , et al. November 14, 2	2006-11-14
Propylene diene copolymerized polymers Grant 7,005,491 - Weng , et al. February 28, 2	2006-02-28
High activity and good hydrogen response Ziegler-Natta polyethylene catalyst App 20050288460 - Zhu, Zhidong ; et al.	2005-12-29
Propylene diene copolymers Grant 6,977,287 - Agarwal , et al. December 20, 2	2005-12-20
Spherical catalyst for olefin polymerization Grant 6,962,889 - Zhu , et al. November 8, 2	2005-11-08
Spherical catalyst for olefin polymerization App 20050176900 - Zhu, Zhidong ; et al.	2005-08-11
Spherical catalyst for olefin polymerization App 20050164873 - Zhu, Zhidong ; et al.	2005-07-28
Articles formed from propylene diene copolymers Grant 6,809,168 - Agarwal , et al. October 26, 2	2004-10-26
Polymerization catalyst systems, their production and use Grant 6,734,267 - Chang May 11, 2	2004-05-11
Articles formed from propylene diene copolymers App 20040087749 - Agarwal, Pawan Kumar ; et al.	2004-05-06
Propylene diene copolymers App 20040087750 - Agarwal, Pawan Kumar ; et al.	2004-05-06
Propylene diene copolymerized polymers App 20040077806 - Weng, Weiqing ; et al.	2004-04-22
Polymerization catalyst systems, their production and use App 20030199390 - Chang, Main	2003-10-23
Polymerization catalyst systems, their production and use Grant 6,605,560 - Chang August 12, 2	2003-08-12
Supported organometallic catalysts and their use in olefin polymerization Grant 6,395,847 - Chang May 28, 2	2002-05-28
Propylene diene copolymers App 20020013440 - Agarwal, Pawan Kumar ; et al.	2002-01-31
Articles formed from propylene diene copolymers App 20010053837 - Agarwal, Pawan Kumar ; et al.	2001-12-20
Supported Organometallic Catalysts And Their Use In Olefin Polymerization App 20010049331 - CHANG, MAIN	2001-12-06
Propylene diene copolymers App 20010007896 - Agarwal, Pawan Kumar ; et al.	2001-07-12
Metallocene catalyst systems Grant 6,184,170 - Chang February 6, 2	2001-02-06
Metallocene catalyst systems Grant 6,136,742 - Chang October 24, 2	2000-10-24
Polymerization catalyst systems, their production and use Grant 5,629,253 - Chang May 13, 1	1997-05-13
Polymerization catalyst systems, their production and use Grant 5,529,965 - Chang June 25, 1	1996-06-25
Supported catalyst for 1-olefin(s) (co)polymerization Grant 5,373,072 - Chang December 13, 1	1994-12-13
Supported catalyst for 1-olefin(s) (co)polymerization Grant 5,238,892 - Chang August 24, 1	1993-08-24
Polymerization process using a silica gel supported metallocene-alumoxane catalyst Grant 5,147,949 - Chang * September 15, 1	1992-09-15
Method for preparing a silica gel supported metallocene-alumoxane catalyst Grant 5,086,025 - Chang * February 4, 1	1992-02-04
Supported vanadium catalyst for polymerization olefins and a process of preparing and use the same Grant 5,032,652 - Chang July 16, 1	1991-07-16
Supported catalyst for 1-olefin and 1,4-diolefin copolymerization Grant 5,017,665 - Chang May 21, 1	1991-05-21
Method for preparing a silica gel supported metallocene-alumoxane catalyst Grant 5,008,228 - Chang * April 16, 1	1991-04-16
Olefin polymerization catalyst from trialkylaluminum mixture, silica gel and a metallocene Grant 5,006,500 - Chang April 9, 1	1991-04-09
Method for utilizing triethylaluminum to prepare an alumoxane support for an active metallocene catalyst Grant 4,937,217 - Chang * June 26, 1	1990-06-26
Method for preparing a supported metallocene-alumoxane catalyst for gas phase polymerization Grant 4,937,301 - Chang * June 26, 1	1990-06-26
Supported metallocene-alumoxane catalyst for high pressure polymerization of olefins and a method of preparing and using the same Grant 4,935,397 - Chang * June 19, 1	1990-06-19
Catalyst for olefin polymerization Grant 4,935,394 - Chang June 19, 1	1990-06-19
Method for utilizing triethyaluminum to prepare an alumoxane support for an active metallocene catalyst Grant 4,925,821 - Chang * May 15, 1	1990-05-15
Method for preparing polyethylene wax by gas phase polymerization Grant 4,914,253 - Chang April 3, 1	1990-04-03
Method for preparing a supported metallocene-alumoxane catalyst for gas phase polymerization Grant 4,912,075 - Chang * March 27, 1	1990-03-27
Supported vanadium catalyst for polymerization of olefins and a process of preparing and using the same Grant 4,904,631 - Chang February 27, 1	1990-02-27

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