Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8875736 | Hydraulic control valve for heavy equipment | — | 2014-11-04 |
| 8375981 | Pressure control valve | — | 2013-02-19 |
| 8113233 | Hydraulic circuit of option device for excavator | — | 2012-02-14 |
| 7913490 | Hydraulic circuit for construction machine | Bon Seok Koo | 2011-03-29 |
| 7581392 | Straight traveling hydraulic circuit | — | 2009-09-01 |
| 7380489 | Hydraulic circuit for option device of heavy construction equipment | — | 2008-06-03 |
| 7337807 | Hydraulic control valve with regeneration function | Bon Seok Koo | 2008-03-04 |
| 7162946 | Hydraulic control valve having holding valve with improved response characteristics | — | 2007-01-16 |
| 7155908 | Hydraulic system for heavy equipment option apparatus | — | 2007-01-02 |
| 7131368 | Variable regeneration valve of heavy equipment | — | 2006-11-07 |