| Classification |
Date registered |
Name |
App/pub number |
| 1 |
2021-03-25 |
The vertical large-diameter water intake
method for river bank filtration with dual
filter structure by stratum characteristics |
New technology
registered No. 912 |
| 2 | 2023-02-14 | A hammer striking device of the improved
type of cam follower for drainpipe
cleaning | Patent No. 10-2501059 |
| 3 |
2022-06-09 |
A valuable metal recovery method from
mineral waste heap |
Patent No. 10-2408635 |
| 4 |
2022-03-10 |
A purifying method of contaminated soil
in the ground |
Patent No. 10-2374396 |
| 5 | 2022-03-03 | A hammer striking device of the type of
cam follower for drainpipe cleaning | Patent No. 10-2372018 |
| 6 |
2018-01-30 |
Stabilization agents for improving soft ground using steel-making slag having passed through a sorting step and recycled resources |
Patent No. 10-1825463 |
| 7 |
2017-11-08 | Underground heat exchanger which has different material double pipe | Patent No. 10-1797520 |
| 8 |
2017-09-11 |
Equipment method of container for planting and container thereof |
Patent No. 10-1778976 |
| 9 |
2017-09-11 |
Cleaner for maintenance control of drainpipe in tunnel |
Patent No.10-1778973 |
| 10 |
2016-08-29 | Equipment method of container for planting and container thereof | Patent No. 10-1653557 |
| 11 |
2014-12-08 | Vegetation sack and tree planting method for slopes in mining regions | Patent No. 10-1472362 |
| 12 |
2013-08-29 | Combined well & open-closed loops geothermal system and construction method using large aperture punching | Patent No. 10-1303575 |
| 13 |
2013-06-03 | Installation method of bio-degradable sub-irritation plant container on sterile land and container thereof | Patent No. 10-1272482 |
| 14 |
2013-02-25 | Multistage pressure injecting method using resistors for ground amelioration and ground reinforcement and a device thereof | Patent No. 10-1238657 |
| 15 |
2012-05-17 | Front expansion type ground reinforcing bar assembly capable of securing a supporting force with a simple structure | Patent No. 10-1149519 |
| 16 |
2011-08-10 | Front expansion type ground reinforcing bar assembly capable of securing a supporting force with a simple structure | Patent No. 10-1057434 |
| 17 |
2008-09-03 | Front expansion type ground reinforcing bar assembly capable of controlling the expansion angle of an expansion piece easily by including a support member for supporting an expansion piece radially | Patent No. 10-0857918 |
| 18 |
2007-08-28 | Ground reinforcing bar and leading end fixing apparatus for it | Patent No. 10-0754927 |
| 19 |
2006-11-17 | Purifying apparatus and purifying method of acidic wastewater | Patent No. 10-0649729 |
| 20 |
2006-09-26 | Column construction method using a grout bag for stably supporting an upper ground of an underground cavity by a large diameter column | Patent No. 10-0631103 |
| 21 |
2005-08-08 | Bidirectional resistor of a ground reinforcing post for increasing effective resisting force of the post by applying resisting force to compressive and drawing directions through resistance faces formed at both sides of the resistor | Patent No. 10-0508551 |
| 22 |
2004-06-24 | Process of constructing well using double filter | Patent No. 10-0438863 |
| 23 |
2003-09-15 | Method and apparatus for pouring grouting into rear cavity of tunnel | Patent No. 10-0399404 |
| 24 |
2003-04-12 | Method of making light-weight materials for plugging cavity of tunnel | Patent No. 10-0381744 |
| 25 |
2003-03-13 | Grouting material to be poured into lining rear cavity of tunnel | Patent No. 10-0377829 |
| 26 |
2000-12-29 | Special plugging method (NSNS) using rear cavity plugging material (DAST-2000) of a tunnel lining | New Technology No. 259 |
| 27 | 1997-10-06 | Reinforce concrete pile | Unity Model No. 110872 |
