Patent 54 Switchover unit for form elevating apparatus 1053798 08.23.2011
53 Switchover unit for form elevating apparatus 1053798 08.23.2011
52 Auto elevating apparatus for form and Auto elevating method of form 1053798 07.28.2011
51 A position-guiding apparatus and method for formtie 1048156 07.04.2011
50 Working scaffold connecting apparatus for form 1048155 07.04.2011
49 Form elevating apparatus 1043920 06.17.2011
48 Elevating apparatus for materials 1032717 04.26.2011
47 Seperating apparatus for sheet-piles and seperating method for sheet-piles using this 1029158 04.06.2011
46 Temporary structure apparatus precast end segment for bridge 1028869 04.05.2011
45 Lifting and moving apparatus temporary structure end segment of bridge and end segment for bridge structure method using the same 1028868 04.05.2011
44 Construction methodology for underground structures with no supoprts by means of precedent backfilling 1025399 03.21.2011
43 Sheet pile disconnecting equipment 1020450 02.28.2011
42 Disconnection of Sheet piles using sheet pile disconnecting equipment 1019439 02.25.2011
41 Linkage structure and linkage construction methodology of precast pier and wall foundation 1017127 02.16.2011
40 controls for cable tension 0016153   02.23.2010
39 rebar cage for PAB assembling jig system 0011037   02.05.2010
38 automatic manufacturing apparatus for cylindrical type reinforcement cage 0119228   12.03.2009
37 heavy weight rotating apparatus for marine 0111620   11.18.2009
36 stumbling prevent device for launching formwork 0097332   10.13.2009
35 lifting unit mounting apparatus for ACS 0088556   09.18.2009
34 sheetpile single extractor 0088088   09.17.2009
33 Struts construcing apparatus and method for bridge 0084947   09.09.2009
32 Switchover unit for form elevating apparatus 0063712   13.07.2009
31 Switchover unit for form elevating apparatus 0062674   09.07.2009
30 Form moving apparatus 0058384   29.06.2009
29 Cable tube mountings apparatus and method for main tower of cable.stayed girder bridge 0052026   11.06.2009
28 Car passing method in a tunnel construction and passing bridge using the same 0048795   02.06.2009
27 Working scaffold connecting apparatus for form 0048270   01.06.2009
26 Bi-directional lifting system 0039008   04.05.2009
25 Vertical Temporary bent 0035166   22.04.2009
24 Method for constructing key segment of bridge 0035165   22.04.2009
23 Form elevating apparatus 0031401   10.04.2009
22 Sheet Pile Straightening Equipment 0023645   19.03.2009
21 Single-rail launching Movable Form System 0021727   13.03.2009
20 Multi Span Launching Scaffolding System
(MS-LSS)		 0015957   25.02.2009
19 Two-way Heavy weight Climbing System 0138328   31.12.2008
18 Auto Climbing System & Climbing Method 0138327   31.12.2008
17 Sheet-pile Detaching Device & Pulling out Method 0095367   29.09.2008
16 Sheet-pile Detaching Device 0093352   23.09.2008
15 Sheet-pile Detaching Device & Detaching Method 0093351   23.09.2008
14 Side-span Temporary facility Weight Shifting Device & the Installation Method 0092592   22.09.2008
13 Precast segment Side-span Installation Device for Bridge 0092591   22.09.2008
12 Connecting Device for Pre-cast concrete members & Prefabricated Bridge Structure and its Construction Method using the Connecting Device 0804125 11.02.2008
11 Lifting Device and Pre-cast Key Segment Lifting Device 0115698   13.11.2007
10 Pre-cast member transportation Device and installation 0935603 18.07.2007
9 Still bender 0071156   16.07.2007
8 Pre-cast Concrete Counterfort Retaining Wall Assembling Segment Pier 0563617 16.03.2006
7 Pre-fabricating Retaining Wall 0488130 28.04.2005
6 Vertical-degree Management System for Tall Structure 0379162 26.03.2003
5 Hydraulic Jack Testing Device of Slip-Form for Concrete 0337756 10.05.2002
4 Concrete Hardening Depth Measuring Device

0343500

 25.06.2002
3 Automatic Measuring System for Construction of Bridges and Tall Structures 0292239 21.03.2001
2 Concrete Placing Device for Improved Slip-Form 0217824 07.06.1999
1 Construction Method for Tapered Section of Slip-Form for Placing Concrete 0131383 29.11.1997
Utility
Models		 7 Wood beam for concrete form 0454372 24.06.2011
6 I type wood beam for concrete form 0005197   29.04.2009
5 Setting device for bolt position 0004836   22.04.2009
4 T-type Section Pre-fabricating Arch Tunnel 0398769 10.10.2005
3 Automatic System for Low pier Construction 0256771 28.11.2001
2 Arch-box-type Pre-fab Culvert 0221907 15.02.2001
1 Slip-Form for Enhancing Vertical Degree 0186938 12.04.2000
Designs 7 Segment for tunnel 522474 02.03.2009
6 Segment for tunnel 0522473 02.03.2009
5 Fabricated tunnel 0522472 02.03.2009
4 Segment for tunnel 0525425 13.06.2008
3 Connecting Device between Footing and Pre-cast concrete pile 0481316 22.02.2008
2 Connecting Device between Footing and Pre-cast concrete pile 0481315 22.02.2008
1 Pre-cast Arch-box-type Pre-fab Culvert 0304166 23.07.2002