Fumio Maruta

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium
- Patent number 4,452,864
- Issue date Jun 5, 1984
- TDK Electronics Co., Ltd.
- Yoshimi Kitahara
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media and process of producing them
- Patent number 4,400,444
- Issue date Aug 23, 1983
- TDK Electronics Co., Ltd.
- Toshiaki Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and apparatus for preparing the same
- Patent number 4,387,136
- Issue date Jun 7, 1983
- TDK Electronics Co., Ltd.
- Seitoku Saito
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium with stepwise orientation of deposited me...
- Patent number 4,371,590
- Issue date Feb 1, 1983
- TDK Electronics Co., Ltd.
- Toshiaki Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,302,510
- Issue date Nov 24, 1981
- TDK Electronics Co., Ltd.
- Shinji Umeki
- G11 - INFORMATION STORAGE