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Inventor

Marcel A. Grubert

Inventor
Montgomery, TX, US

Overview

5→
Patents
2018–2021
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 5 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
LOC1233%
G06FElectric digital data processing17%
PatentTitleYear
D0931764Wheeled frame with motor2021D0931765Wheeled frame with motor202110,087,713Internal subsurface safety valve for rotating downhole pumps201810,082,000Apparatus and method for isolating fluid flow in an open hole completion20189,856,720'Bidirectional flow control device for facilitating stimulation treatments in a subterranean formation'2018

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2018Patents assigned to EXXONMOBIL UPSTREAM RES CO (3)· patent assignee history
2018Patents assigned to GRUBERT MARCEL A (3)· patent assignee history
2018Patents assigned to COURTNAGE DAVID E (1)· patent assignee history
2018Patents assigned to WAN JING (1)· patent assignee history
2018Based in Montgomery, TX, US· patent location history
2021Patents assigned to BOSCH GMBH ROBERT (2)· patent assignee history
2021Based in Penzberg, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EXXONMOBIL UPSTREAM RES CO32018
GRUBERT MARCEL Aself32018
BOSCH GMBH ROBERT22021
COURTNAGE DAVID E12018
WAN JING12018
Locations
LocationPatentsSpan
Montgomery, Texas, US32018
Penzberg, DE22021