Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7285577 | Method for producing rigid polyurethane foam | Sang-jo Suck, Bong Ku Kim, Jang-su An, Hyo-Seob Kim, Dae-Sung Yang +3 more | 2007-10-23 |
| 5768810 | Method for carrying out automatic surface finishing work with electro-hydraulic excavator vehicle | — | 1998-06-23 |
| 5629849 | Method for controlling operation of repeated work of excavator vehicle | — | 1997-05-13 |
| 5442868 | Method for controlling operation of an excavator having electronic micro-module | — | 1995-08-22 |