HEARN; David D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for HEARN; David D..The latest application filed is for "tool for metal plugging or sealing of casing".
- HEARN; David D. - Houston TX
- Hearn; David D. - Anchorage AK
- Hearn; David D. - Richardson TX
| Patent | Date |
|---|---|
| Tool For Metal Plugging Or Sealing Of Casing App 20220307343 - HEARN; David D. ; et al. | 2022-09-29 |
| Through Tubing P&a With Bismuth Alloys App 20220290526 - MUELLER; Dan ; et al. | 2022-09-15 |
| Tool for metal plugging or sealing of casing Grant 11,441,384 - Hearn , et al. September 13, 2 | 2022-09-13 |
| Through tubing P and A with bismuth alloys Grant 11,377,925 - Mueller , et al. July 5, 2 | 2022-07-05 |
| Nano-thermite Well Plug App 20210087904 - HEARN; David D. ; et al. | 2021-03-25 |
| Nano-thermite well plug Grant 10,871,050 - Hearn , et al. December 22, 2 | 2020-12-22 |
| Tool For Metal Plugging Or Sealing Of Casing App 20200381403 - HEARN; David D. ; et al. | 2020-12-03 |
| Tool for metal plugging or sealing of casing Grant 10,760,374 - Hearn , et al. Sep | 2020-09-01 |
| Through Tubing P&a With Bismuth Alloys App 20190128092 - MUELLER; Dan ; et al. | 2019-05-02 |
| Tool For Metal Plugging Or Sealing Of Casing App 20180148991 - Hearn; David D. ; et al. | 2018-05-31 |
| Nano-thermite Well Plug App 20180094504 - Hearn; David D. ; et al. | 2018-04-05 |
| Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore Grant 9,371,694 - Hearn , et al. June 21, 2 | 2016-06-21 |
| Reduced Flow Milling App 20160090804 - GRUBB; Scott A. ; et al. | 2016-03-31 |
| Directional sidetrack well drilling system Grant 8,430,187 - Hearn April 30, 2 | 2013-04-30 |
| Mill-through tailpipe liner exit and method of use thereof Grant 8,256,535 - Hearn , et al. September 4, 2 | 2012-09-04 |
| Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore App 20100307736 - Hearn; David D. ; et al. | 2010-12-09 |
| Directional Sidetrack Well Drilling System App 20100218996 - Hearn; David D. | 2010-09-02 |
| Mill-Through Tailpipe Liner Exit App 20100147592 - Hearn; David D. ; et al. | 2010-06-17 |
| Drilling of laterals from a wellbore Grant 6,318,480 - Hearn November 20, 2 | 2001-11-20 |
| Method and system for increasing oil production from an oil well producing a mixture of oil and gas Grant 6,032,737 - Brady , et al. March 7, 2 | 2000-03-07 |
| Apparatus for milling a window in well tubular Grant 5,944,101 - Hearn August 31, 1 | 1999-08-31 |
| Method for increasing oil production from an oil well producing a mixture of oil and gas Grant 5,794,697 - Wolflick , et al. August 18, 1 | 1998-08-18 |
| Well conduit cutting and milling apparatus and method Grant 5,265,675 - Hearn , et al. November 30, 1 | 1993-11-30 |
| Permanent whipstock and placement method Grant 5,195,591 - Blount , et al. March 23, 1 | 1993-03-23 |
| Medium curvature directional drilling method Grant 4,762,186 - Dech , et al. August 9, 1 | 1988-08-09 |
| Wellbore cleanout apparatus and method Grant 4,744,420 - Patterson , et al. May 17, 1 | 1988-05-17 |
| Means for reducing bending stresses in drill pipe Grant 4,674,580 - Schuh , et al. June 23, 1 | 1987-06-23 |
| Drainhole drilling assembly with oriented elliptic drill collar Grant 4,653,598 - Schuh , et al. March 31, 1 | 1987-03-31 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 