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Hendrikus Huisman
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Oosterhout, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic recording and playback device having means for reducing he...
Patent number
4,467,382
Issue date
Aug 21, 1984
U.S. Philips Corporation
Hendrikus F. Huisman
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of preparing a magnetic pigment of .gamma.-Fe.sub.2 O.sub.3...
Patent number
4,425,409
Issue date
Jan 10, 1984
U.S. Philips Corporation
Hendrikus F. Huisman
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method of manufacturing a magnetic recording element
Patent number
4,384,012
Issue date
May 17, 1983
U.S. Philips Corporation
Hendrikus F. Huisman
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of preparing a FeOOH pigment
Patent number
4,349,385
Issue date
Sep 14, 1982
U.S. Philips Corporation
Hendrikus F. Huisman
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Magnetic recording element in which a salt of an amine and a phosph...
Patent number
4,197,357
Issue date
Apr 8, 1980
U.S. Philips Corporation
Hendrikus F. Huisman
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Magnetic recording medium and method of manufacturing same
Patent number
4,196,258
Issue date
Apr 1, 1980
U.S. Philips Corporation
Hendrikus F. Huisman
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium in which an N-acylsarcosine derivative is...
Patent number
4,153,754
Issue date
May 8, 1979
U.S. Philips Corporation
Hendrikus Huisman
G11 - INFORMATION STORAGE