Inventor
Heyung Sub Lee
Inventor
Daejeon, KR
Overview
Patents· 29 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication15%
G06KGraphical data reading14%
H04BTransmission11%
H04WWireless communication networks7%
G06FElectric digital data processing5%
H04JMultiplex communication5%
H04QSelecting5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%
H04HBroadcast communication3%
PatentTitleYear
11,091,741Method for producing medium chain diol20219,054,881'Radio frequency identification (RFID) tag and interrogator for supporting normal mode and secure mode, and operation method thereof'20159,030,217'Semiconductor wafer and method for auto-calibrating integrated circuit chips using PLL at wafer level'20159,004,367'Radio frequency identification (RFID) tag and method of updating key of RFID tag'20158,967,457'Total history management system and method using radio frequency identification (RFID) tag and barcode'20158,878,650'RFID security reader'20148,791,857'System and method for indoor location tracking using pseudo GPS signal transmitter'20148,787,514'Apparatus and method for generating pseudo noise code'20148,779,896'RFID reader and method for controlling gain thereof'20148,767,699'Apparatus and method for transmitting packet data in wireless sensor network'20148,633,803'Apparatus and method for locating RFID tag'20148,607,333'Radio frequency identification (RFID) security apparatus having security function and method thereof'20138,587,409'Radio security leader controlling operation mode, and radio security tag supporting security mode and normal mode'20138,519,827'Method of generating activation code for radio frequency identification tag'20138,442,167'Multistage channel estimation method and apparatus'20138,422,593'Parallel automatic frequency offset estimation method and apparatus'20138,405,487'RFID sensor tag and sensor data storing method'20138,401,053'Active RFID apparatus for improving PN code generation'20138,314,703'Apparatus and method for managing product distribution using security tag'20128,274,374'Synchronization method between reader and tag'20128,050,562'Apparatus for implementing electro-optical CATV network and signal processing method used by the apparatus'20117,610,608'Digital broadcast system in passive optical network'20097,436,852'Resource allocation method for providing load balancing and fairness for dual ring'20087,403,494'Method for generating nodes in multiway search tree and search method using the same'20087,382,726'Node system, dual ring communication system using node system, and communication method thereof'20087,301,912'Method and apparatus for determining communication path over network by using spanning tree and circuit detection'20076,931,507'Memory allocation method using multi-level partition'20055,013,686'Method of making semiconductor devices having ohmic contact'19914,965,214'Method for manufacturing poly-crystal sillicon having high resistance'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1991Based in Daejun, KR· patent location history
2005–2021Based in Daejeon, KR· patent location history
2007–2015Patents assigned to KOREA ELECTRONICS TELECOMM (25)· patent assignee history
2008Based in Taejon, KR· patent location history
2012–2015Patents assigned to LEE HEYUNG SUB (13)· patent assignee history
2012–2014Patents assigned to CHAE JONG-SUK (10)· patent assignee history
2012–2015Patents assigned to PYO CHEOL SIG (9)· patent assignee history
2012–2015Patents assigned to KIM HYUNSEOK (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOREA ELECTRONICS TELECOMM | 25 | 2007–2015 |
| LEE HEYUNG SUBself | 13 | 2012–2015 |
| CHAE JONG-SUK | 10 | 2012–2014 |
| PYO CHEOL SIG | 9 | 2012–2015 |
| KIM HYUNSEOK | 6 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Daejeon, KR | 26 | 2005–2021 |
| Daejun, KR | 2 | 1990–1991 |
| Taejon, KR | 1 | 2008 |