Korea Telecom
111Patents
1Active
111Granted
42Portfolio score
Filing activity: Nov 1, 1993 → Dec 11, 2007 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6836788B2 | Method for selecting RTP element in dynamic multicast tree for multimedia conference | Electricity | 261 | Expired |
| US7193615B2 | Method for providing mobile terminal with software keyboard suitable for language used in country where it is located | Physics | 167 | Expired |
| US6744935B2 | Content-based image retrieval apparatus and method via relevance feedback by using fuzzy integral | Emerging Cross-Sectional Technologies | 109 | Expired |
| US6192180A | Tray for splicing optical ribbon fibers | Physics | 106 | Expired |
| US6173407A | Method of authenticating and charging a client using a web infoshop service system | Electricity | 96 | Expired |
| US6091289A | Low pass filter | Electricity | 92 | Expired |
| US5910990A | Apparatus and method for automatic equalization of personal multi-channel audio system | Electricity | 90 | Expired |
| US6138163A | Mediate server and real time delivery method between different networks | Electricity | 80 | Expired |
| US5854867A | Optical module having lenses aligned on lens-positioning V-groove and fabrication method thereof | Physics | 76 | Expired |
| US6118562A | Wavelength aligning apparatus using arrayed waveguide grating | Electricity | 59 | Expired |
| US6919824B2 | Keypad assembly with supplementary buttons and method for operating the same | Electricity | 56 | Expired |
| US6493500B1 | Method for mid-span branching of optical fiber cable | Physics | 54 | Expired |
| US6038220A | Method and apparatus of forward traffic channel power control for CDMA wireless local loop system | Electricity | 54 | Expired |
| US6094103A | Multiple feedback loop ring oscillator and delay cell | Electricity | 46 | Expired |
| US6317247A | Bias voltage stabilizing method for electricity-optical modulator based on off-level sampling | Physics | 45 | Expired |
| US6088333A | Multicast routing method using path overlapping efficiency in VP-based on ATM networks | Electricity | 43 | Expired |
| US6208688A | Method of selecting a requantization step size and controlling a bit-rate | Electricity | 39 | Expired |
| US6327359A | Method for providing personal information to call centers using intelligent network | Electricity | 38 | Expired |
| US6344148B1 | Method for aligning optical devices with substrate | Physics | 32 | Expired |
| US6027255A | Bidirectional optical communication module using single optical fiber | Physics | 28 | Expired |
| US6222536A | Method and apparatus for providing a number of subscribers with on-line banking service employing a plurality of bank systems | Electricity | 28 | Expired |
| US5988853A | Method for placing names for point-features on a map based on a plane sweeping technique | Physics | 26 | Expired |
| US5886552A | Data retiming circuit | Electricity | 24 | Expired |
| US6732360B1 | System and method for providing connection between client and heterogeneous database management systems | Electricity | 23 | Expired |
| US6038232A | MPEG-2 multiplexer for ATM network adaptation | Electricity | 21 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.