Choi; Won Choon

Patent Applications and Registrations

Patent applications and USPTO patent grants for Choi; Won Choon.The latest application filed is for "catalyst for producing olefin, including oxygen carrier material and dehydrogenation catalyst".

Company Profile

7.42.37

Choi; Won Choon - Daejeon KR
Choi; Won Choon - Yuseong-gu KR
Choi; Won Choon - Daejoon KR
Choi; Won-Choon - Seoul KR

*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
Method of producing olefin using circulating fluidized bed process Grant 11,439,982 - Park , et al. September 13, 2	2022-09-13
Catalyst For Producing Olefin, Including Oxygen Carrier Material And Dehydrogenation Catalyst App 20210354113 - PARK; Yong Ki ; et al.	2021-11-18
Method Of Producing Olefin Using Circulating Fluidized Bed Process App 20210354112 - PARK; Yong Ki ; et al.	2021-11-18
Catalyst for producing olefin, and continuous reaction-regeneration olefin producing method using the catalyst Grant 11,148,123 - Choi , et al. October 19, 2	2021-10-19
Catalyst for producing olefin having enhanced stability, conversion rate and selectivity, and preparation method thereof Grant 11,141,712 - Hong , et al. October 12, 2	2021-10-12
Catalyst Having Enhanced Conversion And Selectivity For Manufacturing Olefin, And Manufacturing Method Therof App 20210113993 - PARK; Yong Ki ; et al.	2021-04-22
Olefin production method comprising reduction pretreatment Grant 10,821,432 - Park , et al. November 3, 2	2020-11-03
Olefin production method using circulating fluidized bed process Grant 10,737,990 - Park , et al. A	2020-08-11
Catalyst For Producing Olefin Having Enhanced Stability, Conversion Rate And Selectivity, And Preparation Method Thereof App 20200086300 - HONG; Ung Gi ; et al.	2020-03-19
Catalyst For Producing Olefin, And Continuous Reaction-regeneration Olefin Producing Method Using The Catalyst App 20200055028 - CHOI; Won Choon ; et al.	2020-02-20
Olefin Production Method Comprising Reduction Pretreatment App 20190388884 - PARK; Deuk Soo ; et al.	2019-12-26
Olefin Production Method Using Circulating Fluidized Bed Process App 20190330125 - PARK; Deuk Soo ; et al.	2019-10-31
Method for surface-modifying metal silicide, and method and apparatus for preparing trichlorosilane using surface-modified metal silicide Grant 10,226,757 - Choi , et al.	2019-03-12
Naphtha and methanol mixed catalytic cracking reaction process Grant 10,131,850 - Kang , et al. November 20, 2	2018-11-20
Method and apparatus for preparation of granular polysilicon Grant 9,764,960 - Kim , et al. September 19, 2	2017-09-19
Naphtha and Methanol Mixed Catalytic Cracking Reaction Process App 20170253811 - Kang; Na Young ; et al.	2017-09-07
Carbon dioxide capture apparatus Grant 9,694,312 - Park , et al. July 4, 2	2017-07-04
Method for producing high silica zeolite using recovered silica filtrate, and high silica zeolite produced according to said method Grant 9,604,851 - Kang , et al. March 28, 2	2017-03-28
Method For Surface-modifying Metal Silicide, And Method And Apparatus For Preparing Trichlorosilane Using Surface-modified Metal Silicide App 20160332149 - CHOI; WON CHOON ; et al.	2016-11-17
Catalyst for decomposition of perfluorinated compound containing halogen acid gas, and preparation method thereof Grant 9,321,039 - Choi , et al. April 26, 2	2016-04-26
Carbon Dioxide Capture Apparatus App 20160016108 - PARK; Yong Ki ; et al.	2016-01-21
Cation-exchanged zeolite catalyst and process for producing mono-iodo benzene through transiodination by using it Grant 9,138,730 - Yi , et al. September 22, 2	2015-09-22
Cation-exchanged zeolite catalyst and process for producing mono-iodo benzene through transiodination by using it Grant 9,108,180 - Yi , et al. August 18, 2	2015-08-18
Catalyst for catalytic cracking of hydrocarbon, which is used in production of light olefin and production method thereof Grant 9,056,308 - Choo , et al. June 16, 2	2015-06-16
Method For Producing High Silica Zeolite Using Recovered Silica Filtrate, And High Silica Zeolite Produced According To Said Method App 20150139898 - KANG; Na Young ; et al.	2015-05-21
Carbon dioxide capture systems Grant 8,894,753 - Park , et al. November 25, 2	2014-11-25
Method and Apparatus for Preparation of Granular Polysilicon App 20140335008 - Kim; Hee Young ; et al.	2014-11-13
Catalyst For Decomposition Of Perfluorinated Compound Containing Halogen Acid Gas, And Preparation Method Thereof App 20140329667 - Choi; Won Choon ; et al.	2014-11-06
Method of preparing ZSM-5 zeolite using nanocrystalline ZSM-5 seeds Grant 8,840,864 - Choi , et al. September 23, 2	2014-09-23
Carbon Dioxide Capture Systems App 20140251136 - Park; Yong Ki ; et al.	2014-09-11
Method and apparatus for preparation of granular polysilicon Grant 8,821,827 - Kim , et al. September 2, 2	2014-09-02
Catalyst For Catalytic Cracking Of Hydrocarbon, Which Is Used In Production Of Light Olefin And Production Method Therof App 20140213431 - CHOO; DAE HYUN ; et al.	2014-07-31
Method and apparatus for preparation of granular polysilicon Grant 8,747,757 - Kim , et al. June 10, 2	2014-06-10
Catalyst for catalytic cracking of hydrocarbon, which is used in production of light olefin and production method thereof Grant 8,673,802 - Choo , et al. March 18, 2	2014-03-18
Cation-exchanged Zeolite Catalyst And Process For Producing Mono-iodo Benzene Through Transiodination By Using It App 20130116484 - Yi; Yong-Jin ; et al.	2013-05-09
Method for continual preparation of polycrystalline silicon using a fluidized bed reactor Grant 8,431,032 - Kim , et al. April 30, 2	2013-04-30
Apparatus and methods for preparation of high-purity silicon rods using mixed core means Grant 8,430,959 - Kim , et al. April 30, 2	2013-04-30
Method Of Preparing Zsm-5 Zeolite Using Nanocrystalline Zsm-5 Seeds App 20120230910 - Choi; Sun ; et al.	2012-09-13
Methods for preparation of high-purity polysilicon rods using a metallic core means Grant 8,216,643 - Kim , et al. July 10, 2	2012-07-10
Cation-exchanged Zeolite Catalyst And Process For Producing Mono-iodo Benzene Through Transiodination By Using It App 20120172640 - Yi; Yong-Jin ; et al.	2012-07-05
High-pressure fluidized bed reactor for preparing granular polycrystalline silicon Grant 8,114,352 - Kim , et al. February 14, 2	2012-02-14
Method for continual preparation of polycrystalline silicon using a fluidized bed reactor Grant 8,017,024 - Kim , et al. September 13, 2	2011-09-13
High-pressure fluidized bed reactor for preparing granular polycrystalline silicon Grant 7,972,562 - Kim , et al. July 5, 2	2011-07-05
Methods for preparation of high-purity polysilicon rods using a metallic core means Grant 7,923,358 - Kim , et al. April 12, 2	2011-04-12
Method of preparing mono-iodo benzene through transiodination Grant 7,906,694 - Kim , et al. March 15, 2	2011-03-15
Methods for Preparation of High-Purity Polysilicon Rods Using a Metallic Core Means App 20100221454 - Kim; Hee Young ; et al.	2010-09-02
Method for preparing granular polycrystalline silicon using fluidized bed reactor Grant 7,771,687 - Kim , et al. August 10, 2	2010-08-10
Process for production of light olefins from hydrocarbon feedstock Grant 7,718,840 - Choi , et al. May 18, 2	2010-05-18
Method Of Preparing Mono-iodo Benzene Through Transiodination App 20100094067 - Kim; Han-Seok ; et al.	2010-04-15
Method And Apparatus For Preparation Of Granular Polysilicon App 20100068116 - KIM; Hee Young ; et al.	2010-03-18
Method For Continual Preparation Of Polycrystalline Silicon Using A Fluidized Bed Reactor App 20100044342 - KIM; Hee Young ; et al.	2010-02-25
High-pressure Fluidized Bed Reactor For Preparing Granular Polycrystalline Silicon App 20100047136 - Kim; Hee Young ; et al.	2010-02-25
Apparatus And Methods For Preparation Of High-purity Silicon Rods Using Mixed Core Means App 20100040803 - Kim; Hee Young ; et al.	2010-02-18
Methods For Preparation Of High-purity Polysilicon Rods Using A Metallic Core Means App 20100041215 - Kim; Hee Young ; et al.	2010-02-18
Solid acid catalyst for producing light olefins and process using the same Grant 7,663,013 - Choi , et al. February 16, 2	2010-02-16
Solid acid catalyst for producing light olefins and process using the same Grant 7,601,663 - Choi , et al. October 13, 2	2009-10-13
Apparatus and Methods for Preparation of High-Purity Silicon Rods Using Mixed Core Means App 20090130333 - Kim; Hee Young ; et al.	2009-05-21
Solid Acid Catalyst For Producing Light Olefins And Process Using The Same App 20090112035 - Choi; Sun ; et al.	2009-04-30
Method For Continual Preparation Of Polycrystalline Silicon Using A Fluidized Bed Reactor App 20090095710 - KIM; Hee Young ; et al.	2009-04-16
Method and Apparatus for Preparation of Granular Polysilicon App 20090047204 - Kim; Hee Young ; et al.	2009-02-19
Hydrothermally stable microporous molecular sieve catalyst and preparation method thereof Grant 7,488,700 - Choi , et al. February 10, 2	2009-02-10
Method for Preparing Granular Polycrystalline Silicon Using Fluidized Bed Reactor App 20090004090 - Kim; Hee Young ; et al.	2009-01-01
High-Pressure Fluidized Bed Reactor for Preparing Granular Polycrystalline Silicon App 20080267834 - Kim; Hee Young ; et al.	2008-10-30
Hydrothermally Stable Microporous Molecular Sieve Catalyst And Preparation Method Thereof App 20070082809 - Choi; Sun ; et al.	2007-04-12
Process For Production Of Light Olefins From Hydrocarbon Feedstock App 20070010699 - Choi; Sun ; et al.	2007-01-11
Nano-structured metal-carbon composite and process for preparation thereof App 20060240256 - Woo; Seong Ihl ; et al.	2006-10-26
Solid acid catalyst for producing light olefins and process using the same App 20060058562 - Choi; Sun ; et al.	2006-03-16
Modified magnesium oxide catalyst Grant 5,371,306 - Woo , et al. December 6, 1	1994-12-06

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