Frits-Jan Koppert

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Nieuwerkerk Aan de Ijssel, NL

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for joining pipe ends together
- Patent number 7,735,709
- Issue date Jun 15, 2010
- Heerema Marine Contractors Nederland B. V.
- Frits-Jan Koppert
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for making a channel in the ground, excavating device for ma...
- Patent number 7,399,143
- Issue date Jul 15, 2008
- Heerema Marine Contractors Nederland B.V.
- Cornelis van Zandwijk
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Jet excavating device
- Patent number 6,385,868
- Issue date May 14, 2002
- Heerema Holding Construction Inc.
- Rogier Cristian Koene
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for joining pipe ends together
- Publication number 20070023479
- Publication date Feb 1, 2007
- Heerema Marine Contractors Nederland B.V.
- Frits-Jan Koppert
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Method for making a channel in the ground, excavating device for ma...
- Publication number 20060086011
- Publication date Apr 27, 2006
- Heerema Marine Contractors Nederland B.V.
- Cornelis Van Zandwijk
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Jet excavating device
- Publication number 20010035674
- Publication date Nov 1, 2001
- HEEREMA HOLDING CONSTRUCTION INC.
- Rogier Cristian Koene
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC