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Inventor

David Trevas

Inventor
Houston, TX, US

Overview

3→
Patents
2006–2015
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling40%
B01DSeparation20%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids20%
C10GCracking hydrocarbon oils20%
PatentTitleYear
9,095,790'High velocity electrostatic coalescing oil/water separator'20158,353,497'Variable radius annular and ram packing unit and method'20137,096,980'Rotary impact well drilling system and method'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006Patents assigned to HALLIBURTON ENERGY SERV INC (1)· patent assignee history
2006–2015Based in Houston, TX, US· patent location history
2013Patents assigned to HYDRIL USA MFG LLC (1)· patent assignee history
2015Patents assigned to CAMERON INT CORP (1)· patent assignee history
2015Patents assigned to MANEN DAVID R (1)· patent assignee history
2015Patents assigned to SAMS GARY W (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CAMERON INT CORP12015
HALLIBURTON ENERGY SERV INC12006
HYDRIL USA MFG LLC12013
MANEN DAVID R12015
SAMS GARY W12015
Locations
LocationPatentsSpan
Houston, Texas, US32006–2015