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Inventor

Leon Van Den Steen

Inventor
Rijswijk, NL

Overview

5→
Patents
1987–2016
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 drilling67%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material17%
H01GCapacitors17%
PatentTitleYear
9,303,458'Method and system for radially expanding a tubular element'20166,327,539'Method of determining drill string stiffness'20016,166,654'Drilling assembly with reduced stick-slip tendency'20005,806,611'Device for controlling weight on bit of a drilling assembly'19984,674,010'Capacitive submergible electrical connector apparatus'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2016Patents assigned to SHELL OIL CO (5)· patent assignee history
1987–2016Based in Rijswijk, NL· patent location history
2016Patents assigned to KRIESELS PETRUS CORNELIS (1)· patent assignee history
2016Patents assigned to VAN DEN STEEN LEON (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHELL OIL CO51987–2016
KRIESELS PETRUS CORNELIS12016
VAN DEN STEEN LEONself12016
Locations
LocationPatentsSpan
Rijswijk, NL51987–2016