Inventor

Gustaaf Louis van Wechem

Inventor
Reeuwijk, NL

Overview

11→
Patents
1979–2011
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 drilling50%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof19%
Y02TClimate change mitigation technologies related to transportation19%
F02BInternal-combustion piston engines6%
F02DControlling combustion engines6%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to TNO (1)· patent assignee history
1979Based in Berkel en Rodenrijs, NL· patent location history
1989–1990Patents assigned to TEXAS INSTRUMENTS INC (2)· patent assignee history
1989Based in Rijssen, NL· patent location history
1990Based in Holland, NL· patent location history
2002Patents assigned to WELL ENGINEERING PARTNERS B V (1)· patent assignee history
2002–2011Based in Reeuwijk, NL· patent location history
2003–2011Patents assigned to VARCO INT (6)· patent assignee history
2008Patents assigned to SHELL OIL CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VARCO INT62003–2011
TEXAS INSTRUMENTS INC21989–1990
SHELL OIL CO12008
TNO11979
WELL ENGINEERING PARTNERS B V12002
Locations
LocationPatentsSpan
Reeuwijk, NL82002–2011
Holland, NL11990
Rijssen, NL11989
Berkel en Rodenrijs, NL11979