KYUNG-JU CHOI

Person

Louisville, KY, US

People

Patents Grantslast 30 patents

Information Patent Grant
System and method for making electret media
- Patent number 11,590,443
- Issue date Feb 28, 2023
- Clean and Science Company, Ltd.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Tailored multilayered nano-fibrous filtration media and method of m...
- Patent number 10,617,984
- Issue date Apr 14, 2020
- Clean and Science Company, Ltd.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter material comprising an expanded polytetrafluoroethylene cont...
- Patent number 10,272,375
- Issue date Apr 30, 2019
- CLEAN AND SCIENCE COMPANY, LTD.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for making a polymeric fibrous material having increased be...
- Patent number 9,587,329
- Issue date Mar 7, 2017
- Kyung-Ju Choi
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Filter with EPTFE and method of forming
- Patent number 8,152,889
- Issue date Apr 10, 2012
- AAF-McQuay Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter with ePTFE and method of forming
- Patent number 7,959,705
- Issue date Jun 14, 2011
- AAF-McQuay Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Product and method of forming a gradient density fibrous filter
- Patent number 7,896,941
- Issue date Mar 1, 2011
- AAF-McQuay Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter with ePTFE and method of forming
- Patent number 7,837,756
- Issue date Nov 23, 2010
- AAF-McQuay Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Arrangement for forming a layered fibrous mat of varied porosity
- Patent number 7,687,416
- Issue date Mar 30, 2010
- AAF-McQuay Inc.
- Kyung Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method of forming spaced pleated filter material and product of same
- Patent number 7,661,540
- Issue date Feb 16, 2010
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Spacer arrangement for pleated filter
- Patent number 7,625,418
- Issue date Dec 1, 2009
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Product and method of forming successive layers of face-to-face adj...
- Patent number 7,398,887
- Issue date Jul 15, 2008
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method of forming successive layers of face-to-face adjacent media...
- Patent number 7,390,443
- Issue date Jun 24, 2008
- AAF-McQuay Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Crest supported filter frame assembly and method
- Patent number 7,255,723
- Issue date Aug 14, 2007
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Series apparatus for forming layered fibrous mat of differing fiber...
- Patent number 7,210,914
- Issue date May 1, 2007
- AAF-McQuay Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Thermobondable filter medium and border frame and method of making...
- Patent number 7,112,255
- Issue date Sep 26, 2006
- AAF-McQuay Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method, apparatus and product for manufacturing nanofiber media
- Patent number 7,105,124
- Issue date Sep 12, 2006
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method of forming combined pleated scrim and filter media materials...
- Patent number 7,097,684
- Issue date Aug 29, 2006
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Apparatus for forming a layered fibrous mat of varied porosity
- Patent number 6,908,294
- Issue date Jun 21, 2005
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Thermobondable filter medium and border frame and method of making...
- Patent number 6,758,878
- Issue date Jul 6, 2004
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Series arrangement for forming layered fibrous mat of differing fib...
- Patent number 6,736,914
- Issue date May 18, 2004
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Treated filter media and frame
- Patent number 6,652,748
- Issue date Nov 25, 2003
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Arrangement for forming a layered fibrous mat of varied porosity
- Patent number 6,596,205
- Issue date Jul 22, 2003
- AAF McQuay
- Kyung-Ju Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method of assembly of pleated filter with spacer insert
- Patent number 6,409,864
- Issue date Jun 25, 2002
- AAF International, Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Pleated fluid filter medium frame
- Patent number 6,398,839
- Issue date Jun 4, 2002
- AAF International
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Fluid stream velocity distribution control
- Patent number 6,387,140
- Issue date May 14, 2002
- AAF-McQuay, Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter layer comparative testing method and apparatus
- Patent number 6,327,893
- Issue date Dec 11, 2001
- AAF McQuay
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for automated manufacture of unit filters
- Patent number 6,267,832
- Issue date Jul 31, 2001
- AAF International
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Pleated fluid filter medium blend
- Patent number 6,254,653
- Issue date Jul 3, 2001
- AAF International
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Apparatus for forming fibrous filter media
- Patent number 6,230,776
- Issue date May 15, 2001
- AAF International, Inc.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD FOR MAKING ELECTRET MEDIA
- Publication number 20210036216
- Publication date Feb 4, 2021
- Clean and Science Company, Ltd.
- KYUNG-JU Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTRATION MATERIAL HAVING ePTFE AND METHOD OF MAKING
- Publication number 20180326361
- Publication date Nov 15, 2018
- Kyung-Ju Choi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
TAILORED MULTILAYERED NANO-FIBROUS FILTRATION MEDIA AND METHOD OF M...
- Publication number 20180056220
- Publication date Mar 1, 2018
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING...
- Publication number 20170226675
- Publication date Aug 10, 2017
- KYUNG-JU CHOI
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
FILTER MATERIAL COMPRISING AN EXPANDED POLYTETRAFLUOROETHYLENE CONT...
- Publication number 20160082376
- Publication date Mar 24, 2016
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING...
- Publication number 20150159301
- Publication date Jun 11, 2015
- KYUNG-JU CHOI
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Method for Multi-Stage Expansion and Stretching of Film and Filter
- Publication number 20140367325
- Publication date Dec 18, 2014
- Kyung-Ju Choi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Filter with EPTFE and Method of Forming
- Publication number 20110232835
- Publication date Sep 29, 2011
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter with EPTFE and Method of Forming
- Publication number 20110062077
- Publication date Mar 17, 2011
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Pocket Filter Joiner Arrangement and Method of Making
- Publication number 20090049811
- Publication date Feb 26, 2009
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER WITH EPTFE AND METHOD OF FORMING
- Publication number 20080245041
- Publication date Oct 9, 2008
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Pleated Corrugated Media and Method of Making
- Publication number 20080093014
- Publication date Apr 24, 2008
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Crest Supported Filter Frame Assembly and Method
- Publication number 20080017570
- Publication date Jan 24, 2008
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method of Forming Spaced Pleated Filter Material and Product of Same
- Publication number 20070251634
- Publication date Nov 1, 2007
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Product and Method of Forming a Gradient Density Fibrous Filter
- Publication number 20070227359
- Publication date Oct 4, 2007
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Arrangement for Forming a Layered Fibrous Mat of Varied Porosity
- Publication number 20060264141
- Publication date Nov 23, 2006
- Kyung Ju Choi
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
Pleated corrugated media and method of making
- Publication number 20060151383
- Publication date Jul 13, 2006
- AAF-McQUAY INC.
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Crest supported filter frame assembly and method
- Publication number 20050150201
- Publication date Jul 14, 2005
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method of forming spaced pleated filter material and product of same
- Publication number 20050139544
- Publication date Jun 30, 2005
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Product and method of forming successive layers of face-to-face adj...
- Publication number 20050139543
- Publication date Jun 30, 2005
- AAF-McQUAY INC.
- Kyung-Ju Choi
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
Series apparatus for forming layered fibrous mat of differing fiber...
- Publication number 20050129793
- Publication date Jun 16, 2005
- Kyung-Ju Choi
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
Layered fibrous mat of differing fibers and controlled surfaces
- Publication number 20050112977
- Publication date May 26, 2005
- AAF-McQUAY, INC.
- Kyung-Ju Choi
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
Thermobondable filter medium and border frame and method of making...
- Publication number 20040112526
- Publication date Jun 17, 2004
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method of forming combined pleated scrim and filter media materials...
- Publication number 20040112023
- Publication date Jun 17, 2004
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Treated filter media and frame
- Publication number 20040055943
- Publication date Mar 25, 2004
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Apparatus for forming a layered fibrous mat of varied porosity
- Publication number 20040053021
- Publication date Mar 18, 2004
- AAF-McQUAY, INC.
- Kyung-Ju Choi
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Arrangement for forming a layered fibrous mat of varied porosity
- Publication number 20030218270
- Publication date Nov 27, 2003
- AAF-McQUAY INC.
- Kyung-Ju Choi
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Thermobondable filter medium and border frame and method of making...
- Publication number 20030192293
- Publication date Oct 16, 2003
- Kyung-Ju Choi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Series arrangement for forming layered fibrous mat of differing fib...
- Publication number 20030119408
- Publication date Jun 26, 2003
- Kyung-Ju Choi
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Application
Method, apparatus and product for manufacturing nanofiber media
- Publication number 20020192468
- Publication date Dec 19, 2002
- Kyung-Ju Choi
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING

KYUNG-JU CHOI

Person

Patents Grantslast 30 patents

System and method for making electret media

Tailored multilayered nano-fibrous filtration media and method of m...

Filter material comprising an expanded polytetrafluoroethylene cont...

Process for making a polymeric fibrous material having increased be...

Filter with EPTFE and method of forming

Filter with ePTFE and method of forming

Product and method of forming a gradient density fibrous filter

Filter with ePTFE and method of forming

Arrangement for forming a layered fibrous mat of varied porosity

Method of forming spaced pleated filter material and product of same

Spacer arrangement for pleated filter

Product and method of forming successive layers of face-to-face adj...

Method of forming successive layers of face-to-face adjacent media...

Crest supported filter frame assembly and method

Series apparatus for forming layered fibrous mat of differing fiber...

Thermobondable filter medium and border frame and method of making...

Method, apparatus and product for manufacturing nanofiber media

Method of forming combined pleated scrim and filter media materials...

Apparatus for forming a layered fibrous mat of varied porosity

Thermobondable filter medium and border frame and method of making...

Series arrangement for forming layered fibrous mat of differing fib...

Treated filter media and frame

Arrangement for forming a layered fibrous mat of varied porosity

Method of assembly of pleated filter with spacer insert

Pleated fluid filter medium frame

Fluid stream velocity distribution control

Filter layer comparative testing method and apparatus

Method and apparatus for automated manufacture of unit filters

Pleated fluid filter medium blend

Apparatus for forming fibrous filter media

Patents Applicationslast 30 patents

SYSTEM AND METHOD FOR MAKING ELECTRET MEDIA

FILTRATION MATERIAL HAVING ePTFE AND METHOD OF MAKING

TAILORED MULTILAYERED NANO-FIBROUS FILTRATION MEDIA AND METHOD OF M...

SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING...

FILTER MATERIAL COMPRISING AN EXPANDED POLYTETRAFLUOROETHYLENE CONT...

SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING...

Method for Multi-Stage Expansion and Stretching of Film and Filter

Filter with EPTFE and Method of Forming

Filter with EPTFE and Method of Forming

Pocket Filter Joiner Arrangement and Method of Making

FILTER WITH EPTFE AND METHOD OF FORMING

Pleated Corrugated Media and Method of Making

Crest Supported Filter Frame Assembly and Method

Method of Forming Spaced Pleated Filter Material and Product of Same

Product and Method of Forming a Gradient Density Fibrous Filter

Arrangement for Forming a Layered Fibrous Mat of Varied Porosity

Pleated corrugated media and method of making

Crest supported filter frame assembly and method

Method of forming spaced pleated filter material and product of same

Product and method of forming successive layers of face-to-face adj...

Series apparatus for forming layered fibrous mat of differing fiber...

Layered fibrous mat of differing fibers and controlled surfaces

Thermobondable filter medium and border frame and method of making...

Method of forming combined pleated scrim and filter media materials...

Treated filter media and frame

Apparatus for forming a layered fibrous mat of varied porosity

Arrangement for forming a layered fibrous mat of varied porosity

Thermobondable filter medium and border frame and method of making...

Series arrangement for forming layered fibrous mat of differing fib...

Method, apparatus and product for manufacturing nanofiber media