Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7735556 | Method of isolating open perforations in horizontal wellbores using an ultra lightweight proppant | John Misselbrook, Darcy A. Schultz, Trevor Gordon Hayes, Quentin Shane Stang | 2010-06-15 |
| 7465894 | One time high fill pressure switch | James E. Pearson | 2008-12-16 |
| 5012460 | RAM head positioning and tracking system | Steve Popovich, William J. Stanis, Christopher R. Miller, Gary R. Mitchell | 1991-04-30 |
| 4627039 | Head positioning servo system for optical recording with coarse and fine control | — | 1986-12-02 |