Wilfred John

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Berlin, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing through-contacts in semi-conductor wafers via...
- Patent number 8,455,355
- Issue date Jun 4, 2013
- Forschungsverbund Berlin e.V.
- Olaf Krueger
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process and device for soldering electronic boards, in particular,...
- Patent number 5,193,739
- Issue date Mar 16, 1993
- WLS Karl-Heinz Grasmann
- Volker Liedke
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Procedure for processing joints to be soldered
- Patent number 5,192,582
- Issue date Mar 9, 1993
- WLS Karl-Heinz Grasmann Weichlotanlagen-und Service
- Volker Liedke
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Method for Producing Through-Contacts in Semi-Conductor Wafers
- Publication number 20080286963
- Publication date Nov 20, 2008
- Olaf Krueger
- H01 - BASIC ELECTRIC ELEMENTS