Kroll; Dennis E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kroll; Dennis E..The latest application filed is for "casing spears and related systems and methods".
- Kroll; Dennis E. - League City TX US
- - League City TX US
- Kroll; Dennis E. - League TX
| Patent | Date |
|---|---|
| Casing spears and related systems and methods Grant 8,919,452 - Palmer , et al. December 30, 2 | 2014-12-30 |
| Casing spears and related systems and methods Grant 08919452 - | 2014-12-30 |
| Retractable petal collet backup for a subterranean seal Grant 8,393,388 - Bishop , et al. March 12, 2 | 2013-03-12 |
| Twin latch wireline retrieval tool Grant 8,322,413 - Bishop , et al. December 4, 2 | 2012-12-04 |
| Retractable downhole backup assembly for circumferential seal support Grant 8,307,891 - Bishop , et al. November 13, 2 | 2012-11-13 |
| Casing Spears and Related Systems and Methods App 20120111556 - Palmer; Larry T. ; et al. | 2012-05-10 |
| Twin Latch Wireline Retrieval Tool App 20120043073 - Bishop; David S. ; et al. | 2012-02-23 |
| Retractable Petal Collet Backup for a Subterranean Seal App 20120037355 - Bishop; David S. ; et al. | 2012-02-16 |
| Stroke-controlling Device And Method App 20110277585 - Kroll; Dennis E. ; et al. | 2011-11-17 |
| Helical backup element Grant 8,016,295 - Guest , et al. September 13, 2 | 2011-09-13 |
| Retractable Downhole Backup Assembly for Circumferential Seal Support App 20110036561 - Bishop; David S. ; et al. | 2011-02-17 |
| Retractable downhole backup assembly for circumferential seal support Grant 7,806,177 - Bishop , et al. October 5, 2 | 2010-10-05 |
| Retractable Downhole Backup Assembly for Circumferential Seal Support App 20100186947 - Bishop; David ; et al. | 2010-07-29 |
| Helical Backup Element App 20090126925 - GUEST; RANDALL V. ; et al. | 2009-05-21 |
| Non-backed-up packing element system App 20080156501 - Vinson; Justin P. ; et al. | 2008-07-03 |
| Downhole Isolation Device With Retained Valve Member App 20030221824 - Solfronk, Matthew D. ; et al. | 2003-12-04 |
| Downhole isolation device with retained valve member Grant 6,651,738 - Solfronk , et al. November 25, 2 | 2003-11-25 |
| Removable non-metallic bridge plug or packer Grant 6,167,963 - McMahan , et al. January 2, 2 | 2001-01-02 |
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