Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9926759 | Removable orifice plate device | — | 2018-03-27 |
| 9695945 | Fine control gas valve | Louie Liu | 2017-07-04 |
| 9068421 | Molded well head cover | — | 2015-06-30 |
| 8800597 | Fine control gas valve | Louie Liu | 2014-08-12 |
| 7686286 | Variable thickness pin clamp | — | 2010-03-30 |
| 7669840 | Hook clamp unit | Liu Xu | 2010-03-02 |
| 7314214 | Power clamp | Matthew Rentz, Henry Dykstra | 2008-01-01 |
| 7311301 | Hook pin unit having weld slag protection | Xu Liu | 2007-12-25 |
| 6832539 | Cylinder lock | — | 2004-12-21 |
| 6655673 | Power clamp mechanism | — | 2003-12-02 |
| 6386598 | Locking power clamp | Henry Dykstra | 2002-05-14 |
| 5961109 | Amplified hold-down clamp | Henry Dykstra | 1999-10-05 |
| 5431191 | Mechanically interlocked layered tube with controlled flexibility | Ryan Neuhauser | 1995-07-11 |