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Inventor

James E. Lindsay

Inventor
Glasgow, GB

Overview

3→
Patents
1976–2019
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.

B60Cprimary
B60CVehicle tyres25%
C21DModifying the physical structure of ferrous metals25%
E21BEarth or rock drilling25%
F16JPistons25%
PatentTitleYear
10,480,285Energy saving downhole and subsea valve20194,643,079'Iron piston having selectively hardened ring groove'19873,969,936'Inflation valve gauge'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to LINDSAY JAMES E (1)· patent assignee history
1976Based in El Toro, CA, US· patent location history
1987Patents assigned to GEN MOTORS CORP (1)· patent assignee history
1987Based in Warrenville, IL, US· patent location history
2019Patents assigned to HANSEN DOWNHOLE PUMP SOLUTIONS AS (1)· patent assignee history
2019Based in Glasgow, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GEN MOTORS CORP11987
HANSEN DOWNHOLE PUMP SOLUTIONS AS12019
LINDSAY JAMES Eself11976
Locations
LocationPatentsSpan
Glasgow, GB12019
Warrenville, Illinois, US11987
El Toro, California, US11976