Inventor

John Barry Fitzgerald

Inventor
Cambridge, GB

Overview

18→
Patents
1976–2021
Patent span
Physics
Primary field (CPC G)

Patents· 18 as inventor

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

G01Vprimary
G01VGeophysics19%
G01FMeasuring volume, volume flow, mass flow or liquid level13%
G01NInvestigating or analysing materials by determining their chemical or physical properties13%
E21BEarth or rock drilling9%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general9%
Y10TTechnical subjects covered by former us classification6%
A01HNew plants or non-transgenic processes for obtaining them3%
B01DSeparation3%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%
C04BLime, magnesia3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1983Patents assigned to ACF IND INC (3)· patent assignee history
1976–1990Based in St. Louis, MO, US· patent location history
1990Patents assigned to CARTER AUTOMOTIVE CO (1)· patent assignee history
2004–2017Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (13)· patent assignee history
2004–2017Based in Cambridge, GB· patent location history
2017Patents assigned to FITZGERALD JOHN B (1)· patent assignee history
2021Patents assigned to CORTEVA AGRISCIENCE LLC (1)· patent assignee history
2021Based in Lafayette, IN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SCHLUMBERGER TECHNOLOGY CORP132004–2017
ACF IND INC31976–1983
CARTER AUTOMOTIVE CO11990
CORTEVA AGRISCIENCE LLC12021
FITZGERALD JOHN Bself12017
Locations
LocationPatentsSpan
Cambridge, GB132004–2017
St. Louis, MO, US41976–1990
Lafayette, IN, US12021