Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9879507 | Adaptive stimulation system | Barbara C. Gilstad | 2018-01-30 |
| 9777556 | Adaptive stimulation system | Barbara C. Gilstad | 2017-10-03 |
| 9169707 | Tunable down-hole stimulation array | Barbara C. Gilstad | 2015-10-27 |
| 9080690 | Tunable check valve | Barbara C. Gilstad | 2015-07-14 |
| 9027636 | Tunable down-hole stimulation system | Barbara C. Gilstad | 2015-05-12 |
| 8944409 | Tunable fluid end | Barbara C. Gilstad | 2015-02-03 |
| 8939200 | Tunable hydraulic stimulator | Barbara C. Gilstad | 2015-01-27 |
| 8905376 | Tunable check valve | Barbara C. Gilstad | 2014-12-09 |
| 8827244 | Tunable fluid end | Barbara C. Gilstad | 2014-09-09 |
| 8746654 | Tunable fluid end | Barbara C. Gilstad | 2014-06-10 |
| 8720857 | Tunable fluid end | Barbara C. Gilstad | 2014-05-13 |
| 8708306 | Tunable valve assembly | Barbara C. Gilstad | 2014-04-29 |
| 8567753 | Tunable valve assembly | Barbara C. Gilstad | 2013-10-29 |
| 8567754 | Tunable valve assembly | Barbara C. Gilstad | 2013-10-29 |
| 8550425 | Impulse tolerant valve assembly | Barbara C. Gilstad | 2013-10-08 |
| 8496224 | Tunable valve assembly | Barbara C. Gilstad | 2013-07-30 |
| 8403337 | Multifunction ring | Barbara C. Gilstad | 2013-03-26 |
| 8292301 | Multifunction ring | Barbara C. Gilstad | 2012-10-23 |
| 8292260 | Impulse tolerant valve assembly | — | 2012-10-23 |
| 8276918 | Plunger seal ring | Barbara C. Gilstad | 2012-10-02 |
| 8267371 | Impulse tolerant valve body | — | 2012-09-18 |
| 8210542 | Plunger seal ring | — | 2012-07-03 |
| 7716761 | Adaptive positioning system | Barbara C. Gilstad, Elizabeth A. McGuigan, John R. H. Gilstad | 2010-05-18 |
| 5632335 | Well tubing and pump rod protector | Wallace R. Campbell | 1997-05-27 |
| 4880304 | Optical sensor for pulse oximeter | Jonathan Paul Jaeb, Ronald L. Branstetter | 1989-11-14 |