Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8813915 | Energy storing device in which energy is stored through spring torsion | — | 2014-08-26 |
| 8672608 | Tower type vertical axle windmill | — | 2014-03-18 |
| 8177482 | Wind power conversion apparatus driven by fly wheel | — | 2012-05-15 |
| 8001948 | Kinetic energy generation apparatus having increased power output | — | 2011-08-23 |
| 7926462 | Kinetic energy generation device | — | 2011-04-19 |
| 7755239 | Magnetic repulsion type bearing | — | 2010-07-13 |
| 7413404 | Sail wing type windmill | — | 2008-08-19 |
| 6880677 | Elastic energy storage device | — | 2005-04-19 |
| 6416343 | Structure of a connector | — | 2002-07-09 |
| 5170117 | Socket for testing a plug-in type semiconductor | — | 1992-12-08 |
| D299253 | Combined logic training board and power input bodies | — | 1989-01-03 |
| 4606725 | Logic training board assembly | — | 1986-08-19 |