Inventor

Larry J. Leising

Inventor
Missouri City, TX, US

Overview

11→
Patents
1978–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 11 as inventor

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

E21Bprimary
E21BEarth or rock drilling69%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure13%
F04BPositive-displacement machines for liquids6%
F16KValves6%
Y10TTechnical subjects covered by former us classification6%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2019Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (8)· patent assignee history
1978–1999Based in Sugar Land, TX, US· patent location history
1980–1982Based in Rosenberg, TX, US· patent location history
1993Patents assigned to DOWELL SCHLUMBERGER INC (1)· patent assignee history
1993Based in Broken Arrow, OK, US· patent location history
1995–1996Patents assigned to DOWELL A DIVISION OF SCHLUMBER (2)· patent assignee history
2014–2015Patents assigned to LEISING LARRY J (3)· patent assignee history
2014Patents assigned to ERKOL ZAFER (1)· patent assignee history
2014–2019Based in Missouri City, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SCHLUMBERGER TECHNOLOGY CORP81978–2019
LEISING LARRY Jself32014–2015
DOWELL A DIVISION OF SCHLUMBER21995–1996
DOWELL SCHLUMBERGER INC11993
ERKOL ZAFER12014
Locations
LocationPatentsSpan
Missouri City, Texas, US42014–2019
Sugar Land, Texas, US41978–1999
Rosenberg, Texas, US21980–1982
Broken Arrow, OK, US11993