Barnhart; Daniel Ralph
Patent Applications and Registrations
Patent applications and USPTO patent grants for Barnhart; Daniel Ralph.The latest application filed is for "wellhead seal with pressure energizing from below".
- Barnhart; Daniel Ralph - Houston TX
| Patent | Date |
|---|---|
| Wellhead seal with pressure energizing from below Grant 10,900,316 - Ford , et al. January 26, 2 | 2021-01-26 |
| Wellhead Seal With Pressure Energizing From Below App 20180073319 - Ford; David Lawrence ; et al. | 2018-03-15 |
| Ratcheted E-ring retention device Grant 9,797,215 - Ford , et al. October 24, 2 | 2017-10-24 |
| High-capacity single-trip lockdown bushing and a method to operate the same Grant 9,376,881 - Gette , et al. June 28, 2 | 2016-06-28 |
| Ratcheted E-ring Retention Device App 20160040498 - Ford; David Lawrence ; et al. | 2016-02-11 |
| Load enhanced locking arrangement Grant 9,115,561 - Gette , et al. August 25, 2 | 2015-08-25 |
| Wellhead Annulus Seal Having A Wickered Surface App 20140238699 - Gette; Nicholas Peter ; et al. | 2014-08-28 |
| Casing Debris Cleaner App 20140076573 - Gette; Nicholas Peter ; et al. | 2014-03-20 |
| Load Enhanced Locking Arrangement App 20140069632 - Gette; Nicholas Peter ; et al. | 2014-03-13 |
| High-capacity Single-trip Lockdown Bushing And A Method To Operate The Same App 20130248196 - Gette; Nicholas Peter ; et al. | 2013-09-26 |
| Wellhead Assembly Having A Sinusoidal Sealing Profile And A Method To Assemble The Same App 20130248199 - Gette; Nicholas Peter ; et al. | 2013-09-26 |
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