Heyung Sub Lee
28Patents
5h-index
36Co-inventors
69Inventor score
Filing activity: Jul 27, 1988 → Nov 15, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7382726B2 | Node system, dual ring communication system using node system, and communication method thereof | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5013686A | Method of making semiconductor devices having ohmic contact | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4965214A | Method for manufacturing poly-crystal sillicon having high resistance | Emerging Cross-Sectional Technologies | 16 | Expired |
| US8050562B2 | Apparatus for implementing electro-optical CATV network and signal processing method used by the apparatus | Electricity | 10 | Active |
| US7301912B2 | Method and apparatus for determining communication path over network by using spanning tree and circuit detection | Electricity | 6 | Expired |
| US8967457B2 | Total history management system and method using radio frequency identification (RFID) tag and barcode | Physics | 5 | Active |
| US8274374B2 | Synchronization method between reader and tag | Physics | 4 | Active |
| US8791857B2 | System and method for indoor location tracking using pseudo GPS signal transmitter | Physics | 4 | Active |
| US6931507B2 | Memory allocation method using multi-level partition | Physics | 3 | Expired |
| US9054881B2 | Radio frequency identification (RFID) tag and interrogator for supporting normal mode and secure mode, and operation method thereof | Electricity | 3 | Active |
| US7436852B2 | Resource allocation method for providing load balancing and fairness for dual ring | Electricity | 3 | Expired |
| US8633803B2 | Apparatus and method for locating RFID tag | Electricity | 3 | Active |
| US7403494B2 | Method for generating nodes in multiway search tree and search method using the same | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8587409B2 | Radio security leader controlling operation mode, and radio security tag supporting security mode and normal mode | Physics | 2 | Active |
| US8878650B2 | RFID security reader | Electricity | 2 | Active |
| US8519827B2 | Method of generating activation code for radio frequency identification tag | Physics | 1 | Active |
| US9004367B2 | Radio frequency identification (RFID) tag and method of updating key of RFID tag | Electricity | 1 | Active |
| US7610608B2 | Digital broadcast system in passive optical network | Electricity | 1 | Active |
| US8442167B2 | Multistage channel estimation method and apparatus | Electricity | 1 | Active |
| US8314703B2 | Apparatus and method for managing product distribution using security tag | Physics | 1 | Active |
| US8787514B2 | Apparatus and method for generating pseudo noise code | Electricity | 0 | Active |
| US8779896B2 | RFID reader and method for controlling gain thereof | Electricity | 0 | Active |
| US8405487B2 | RFID sensor tag and sensor data storing method | Electricity | 0 | Active |
| US8401053B2 | Active RFID apparatus for improving PN code generation | Electricity | 0 | Active |
| US8422593B2 | Parallel automatic frequency offset estimation method and apparatus | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.