Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9441683 | Hydraulic auxiliary brake device of motor used for oil production | — | 2016-09-13 |
| 9163679 | Magnetic powder brake device of motor used for oil production | — | 2015-10-20 |
| 8555957 | Crude oil production equipment | Chinn-Chann Chiang | 2013-10-15 |
| 7795824 | Linear motor automatic control circuit assembly for controlling the operation of a 3-phase linear motor-driven submersible oil pump of an artificial oil lift system | Chinn-Chann Chiang | 2010-09-14 |
| 7699097 | Mover stabilizing and stator cooling arrangement of a 3-phase linear motor of a submersible oil pump | Chinn-Chann Chiang | 2010-04-20 |
| 7316270 | Oil pumping unit using an electrical submersible pump driven by a circular linear synchronous three-phase motor with rare earth permanent magnet | — | 2008-01-08 |
| 6595757 | Air compressor control system | — | 2003-07-22 |
| 6564568 | Refrigerating compressor control circuit | — | 2003-05-20 |
| 5914863 | Signal adapter | — | 1999-06-22 |
| D396691 | Adapter | — | 1998-08-04 |
| D396692 | Adapter | — | 1998-08-04 |
| D396693 | Adapter | — | 1998-08-04 |
| D396694 | Adapter | — | 1998-08-04 |
| D396695 | Adapter | — | 1998-08-04 |