• Patents 
    1. US Patent 07254388, System for MS-assisted Location Trigger, and Service Methods Thereof
    2. US Patent 07378956, EP Patent 1555541, ULID Data Structure, ULID-based Location Acquisition Method and Location-Based Service System
    3. US Patent 07239759, Spatial Image Information System and Method for Supporting Efficient Storage and Retrieval of Spatial Images
    4. China Patent ZL03152466.4, Spatial image information system and method for supporting efficient storage and retrieval of spatial images
    5. Korea Patent 10-0461020, Query Processing System for Moving Objects
    6. Korea Patent 10-0484941, Spatial Image Information System
    7. Korea Patent 10-0522085, Location Acquisition System for Optimizing Communication Cost in Moving Objects Services
    8. Korea Patent 10-0491724, Spatial image information system and method for supporting efficient storage and retrieval of spatial images
    9. Korea Patent 10-0496869, Distributed Storage of Very Large Image Data for Image Geographic Information Systems
    10. Korea Patent 10-0463834, System and Methods for Image Geographic Information Systems
    11. Korea Patent 10-0587529, Location Management System for Multiple Moving Objects
    12. Korea Patent 10-0623480, MS-assisted Location Trigger System and Methods
    13. Korea Patent 10-0601041,Location Provision Mechanism for Mobile Stations
    14. Korea Patent 10-0714191,Location-based Messenger Service and Methods
    15. Korea Patent 10-1220960, Geological Ontology Service System