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Johannes P. J. G. van Liempd
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Eindhoven, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Master disc
Patent number
5,304,455
Issue date
Apr 19, 1994
U.S. Philips Corporation
Johannes P. J. G. van Liempd
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a matrix and a master plate suitable for us...
Patent number
5,214,632
Issue date
May 25, 1993
U.S. Philips Corporation
Johannes P. J. G. Van Liempd
G11 - INFORMATION STORAGE
Information
Patent Grant
Master disc suitable for the manufacture of matrices containing a r...
Patent number
5,114,829
Issue date
May 19, 1992
U.S. Philips Corporation
Dirk J. Gravesteijn
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of recording information, recording element manufactured acc...
Patent number
5,106,721
Issue date
Apr 21, 1992
U.S. Phillips Corporation
Johannes P. J. G. Van Liempd
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a metal matrix and a master disc suitable f...
Patent number
5,019,487
Issue date
May 28, 1991
U.S. Philips Corporation
Dirk J. Gravesteijn
G11 - INFORMATION STORAGE
Information
Patent Grant
Master disc and method of manufacturing a matrix
Patent number
5,004,660
Issue date
Apr 2, 1991
U.S. Philips Corporation
Maarten A. Van Andel
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of recording information, recording element manufactured acc...
Patent number
5,001,035
Issue date
Mar 19, 1991
U.S. Philips Corporation
Johannes P. J. G. van Liempd
G11 - INFORMATION STORAGE