Hermanus S. J. Altena

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Drachten, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a cutting member having an auxiliary layer
- Patent number 6,327,784
- Issue date Dec 11, 2001
- U.S. Philips Corporation
- Hermanus S. J. Altena
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for electrochemically machining a workpiece
- Patent number 6,312,584
- Issue date Nov 6, 2001
- U.S. Philips Corporation
- Hermanus S. J. Altena
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and arrangement for the electrochemical machining of a workp...
- Patent number 6,214,200
- Issue date Apr 10, 2001
- U.S. Philips Corporation
- Hermanus S. J. Altena
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of electrochemically machining workpieces
- Patent number 5,904,831
- Issue date May 18, 1999
- U.S. Philips Corporation
- Hermanus S. J. Altena
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR