Dong-A Flexible Metal Tubes Co., LTD.

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FALLS CHURCH, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Corrugated pipe forming apparatus
- Patent number 11,648,598
- Issue date May 16, 2023
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinrim Choi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Connecting device for corrugated pipe and coupling method thereof
- Patent number 11,644,135
- Issue date May 9, 2023
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinlim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Connecting device for corrugated pipe and coupling method thereof
- Patent number 11,306,850
- Issue date Apr 19, 2022
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinlim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Connection structure of corrugated pipe
- Patent number 9,568,131
- Issue date Feb 14, 2017
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Spiral-type flexible pipe connector
- Patent number 9,500,308
- Issue date Nov 22, 2016
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Flexible pipe connected with flexible pipe connecting structure and...
- Patent number 8,814,223
- Issue date Aug 26, 2014
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Welding apparatus of stainless steel pipe and welding method of the...
- Patent number 8,207,468
- Issue date Jun 26, 2012
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for coupling a protective net to flexible tube for a sprinkler
- Patent number 6,845,559
- Issue date Jan 25, 2005
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Sprinkler mounting device and method
- Patent number 6,554,231
- Issue date Apr 29, 2003
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Sprinkler mounting device
- Patent number 6,260,810
- Issue date Jul 17, 2001
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
CONNECTING DEVICE FOR CORRUGATED PIPE AND COUPLING METHOD THEREOF
- Publication number 20220186863
- Publication date Jun 16, 2022
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinlim CHOI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
CORRUGATED PIPE FORMING APPARATUS
- Publication number 20220176433
- Publication date Jun 9, 2022
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinrim CHOI
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
CONNECTING DEVICE FOR CORRUGATED PIPE AND COUPLING METHOD THEREOF
- Publication number 20190120411
- Publication date Apr 25, 2019
- DONG-A FLEXIBLE METAL TUBES CO., LTD.
- Jinlim CHOI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
SPIRAL-TYPE FLEXIBLE PIPE CONNECTOR
- Publication number 20110068571
- Publication date Mar 24, 2011
- Dong-A Flexible Metal Tubes Co., Ltd.
- Jin Lim CHOI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
WELDING APPARATUS OF STAINLESS STEEL PIPE AND WELDING METHOD OF THE...
- Publication number 20100224595
- Publication date Sep 9, 2010
- DONG-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Structure and method for coupling protective net to flexible tube f...
- Publication number 20020195817
- Publication date Dec 26, 2002
- DONG-A Flexible Metal Tubes Co., Ltd.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Sprinkler mounting device and method
- Publication number 20020066834
- Publication date Jun 6, 2002
- Dong-A Flexible Metal Tubes Co., Inc.
- Jin Lim Choi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Dong-A Flexible Metal Tubes Co., LTD.

Organization

Patents Grantslast 30 patents

Corrugated pipe forming apparatus

Connecting device for corrugated pipe and coupling method thereof

Connecting device for corrugated pipe and coupling method thereof

Connection structure of corrugated pipe

Spiral-type flexible pipe connector

Flexible pipe connected with flexible pipe connecting structure and...

Welding apparatus of stainless steel pipe and welding method of the...

Method for coupling a protective net to flexible tube for a sprinkler

Sprinkler mounting device and method

Sprinkler mounting device

Patents Applicationslast 30 patents

CONNECTING DEVICE FOR CORRUGATED PIPE AND COUPLING METHOD THEREOF

CORRUGATED PIPE FORMING APPARATUS

CONNECTING DEVICE FOR CORRUGATED PIPE AND COUPLING METHOD THEREOF

SPIRAL-TYPE FLEXIBLE PIPE CONNECTOR

WELDING APPARATUS OF STAINLESS STEEL PIPE AND WELDING METHOD OF THE...

Structure and method for coupling protective net to flexible tube f...

Sprinkler mounting device and method

Trademarklast 30 trademarks