Inventor
Greg Marshall
Inventor
Magnolia, TX, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling56%
H01QAntennas, i.e. radio aerials22%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids11%
H01RElectrically-conductive connections11%
PatentTitleYear
9,270,051'Wet mate connector'20168,770,300'Debris barrier for hydraulic disconnect tools'20148,739,885'Debris barrier for hydraulic disconnect tools'20147,963,341'Apparatus and methods of use for a whipstock anchor'20117,172,039'Down-hole vane motor'20077,100,696'Disconnect for use in a wellbore'20065,248,986'Universal swivel device for an adjustable angle vehicular antenna'19935,198,829'Antenna rod with removably mounted suction cups'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2014Patents assigned to MARSHALL GREG (3)· patent assignee history
1993Based in Honolulu, HI, US· patent location history
2006–2011Patents assigned to WEATHERFORD LAMB (3)· patent assignee history
2006–2014Based in Magnolia, TX, US· patent location history
2014Patents assigned to HALLIBURTON ENERGY SERV INC (2)· patent assignee history
2014Patents assigned to SHAW JOEL D (1)· patent assignee history
2016Patents assigned to AMETEK SCP INC (1)· patent assignee history
2016Based in Westerly, RI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MARSHALL GREGself | 3 | 1993–2014 |
| WEATHERFORD LAMB | 3 | 2006–2011 |
| HALLIBURTON ENERGY SERV INC | 2 | 2014 |
| AMETEK SCP INC | 1 | 2016 |
| SHAW JOEL D | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Magnolia, Texas, US | 5 | 2006–2014 |
| Honolulu, HI, US | 2 | 1993 |
| Westerly, RI, US | 1 | 2016 |