Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8167266 | Clutch apparatus for electric valve actuator | Jae Chul Lee, Dae Gon Kim | 2012-05-01 |
| 5883769 | Aluminum head drum with a protective layer which smoothly and continuously varies in hardness for use in a videocassette recorder | Kye-Chul Choi, Kwang Yong Eun, Kwang Ryeol Lee | 1999-03-16 |
| 5803336 | Pinch roller type tape drive assembly | — | 1998-09-08 |
| 5793575 | Rotary transformer for a video cassette recorder having a stator and a rotor equipped with coils | — | 1998-08-11 |
| 5790350 | Head drum assembly for a VCR with a shaft including a vertical groove and a slanted groove | — | 1998-08-04 |
| 5754373 | Head drum assembly having a pre-loading sheet sleeve structured to facilitate its connection with a shaft and a rotor plate and method for fixing the same onto the shaft | — | 1998-05-19 |
| 5754374 | Dynamic pressure bearing apparatus and head drum assembly of a video cassette recorder utilizing the same | — | 1998-05-19 |
| 5751520 | Head drum assembly of a video cassette recorder | — | 1998-05-12 |
| 5739985 | Head drum assembly | — | 1998-04-14 |
| 5734530 | Head drum assembly incorporating therein parts coated with diamond-like carbon | — | 1998-03-31 |
| 5724213 | Head drum assembly of video cassette recorder | — | 1998-03-03 |
| 5719723 | Head drum assembly for rotating a rotary drum by generating a load bearing air layer | — | 1998-02-17 |
| 5713121 | Method of manufacturing a rotary head drum | — | 1998-02-03 |
| 5675457 | Head drum assembly for use in a video cassette recorder | — | 1997-10-07 |
| 5581426 | Upper head drum assembly including at least one nut cap | — | 1996-12-03 |
| 5513163 | Optical tape recording/reproducing apparatus | — | 1996-04-30 |
| 4828466 | Oil feeding means incorporated in a horizontal type rotary compressor | — | 1989-05-09 |