Portwood; Gary
Patent Applications and Registrations
Patent applications and USPTO patent grants for Portwood; Gary.The latest application filed is for "balancing of drill bits".
- Portwood; Gary - Florence N/A IT
- Portwood; Gary - Firenze IT
- Portwood; Gary - Livorno IT
- Portwood; Gary - Cecina IT
- Portwood; Gary - Kingwood TX
- Portwood; Gary - Katy TX
| Patent | Date |
|---|---|
| Rolling cone drill bit having high density cutting elements Grant 9,074,431 - Portwood , et al. July 7, 2 | 2015-07-07 |
| Balancing Of Drill Bits App 20150101868 - Tedeschi; Luca ; et al. | 2015-04-16 |
| Rolling cone drill bit having sharp cutting elements in a zone of interest Grant 8,316,968 - Ferrari , et al. November 27, 2 | 2012-11-27 |
| Rock bit with vectored hydraulic nozzle retention sleeves Grant 8,091,654 - Tedeschi , et al. January 10, 2 | 2012-01-10 |
| Rock bit with hydraulic configuration Grant 7,913,778 - Tedeschi , et al. March 29, 2 | 2011-03-29 |
| Rolling Cone Drill Bit Having Sharp Cutting Elements In A Zone Of Interest App 20100276207 - Ferrari; Giampaolo ; et al. | 2010-11-04 |
| Drill bit and cutting inserts for hard/abrasive formations Grant 7,690,442 - Portwood , et al. April 6, 2 | 2010-04-06 |
| Rolling Cone Drill Bit Having High Density Cutting Elements App 20090188724 - Portwood; Gary ; et al. | 2009-07-30 |
| Rock Bit With Vectored Hydraulic Nozzle Retention Sleeves App 20090159340 - Tedeschi; Luca ; et al. | 2009-06-25 |
| Rock Bit With Hydraulic Configuration App 20090095536 - Tedeschi; Luca ; et al. | 2009-04-16 |
| Drill Bit and Cutting Inserts For Hard/Abrasive Formations App 20060260846 - Portwood; Gary ; et al. | 2006-11-23 |
| Fracture and wear resistant rock bits Grant 6,655,478 - Liang , et al. December 2, 2 | 2003-12-02 |
| Fracture and wear resistant rock bits App 20030111272 - Liang, Dah-Ben ; et al. | 2003-06-19 |
| Conical inserts for rolling cone rock bits Grant 5,415,244 - Portwood May 16, 1 | 1995-05-16 |
| Core cutting rock bit Grant 5,394,952 - Johns , et al. March 7, 1 | 1995-03-07 |
| Composite seal for rotary cone rock bits Grant 5,362,073 - Upton , et al. November 8, 1 | 1994-11-08 |
| Ultra hard insert cutters for heel row rotary cone rock bit applications Grant 5,351,770 - Cawthorne , et al. October 4, 1 | 1994-10-04 |
| Ultra hard insert cutters for heel row rotary cone rock bit applications Grant 5,341,890 - Cawthorne , et al. August 30, 1 | 1994-08-30 |
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