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Magnetic recording medium
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Patent number 4,588,654
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Issue date May 13, 1986
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TDK Electronics Co., Ltd.
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Takayoshi Kobuke
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,563,396
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Issue date Jan 7, 1986
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TDK Electronics Company Ltd.
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Kazumasa Fukuda
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,542,062
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Issue date Sep 17, 1985
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TDK Electronics Co., Ltd.
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Kazuo Takada
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,520,076
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Issue date May 28, 1985
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TDK Electronics Co., Ltd.
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Seitoku Saito
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,486,498
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Issue date Dec 4, 1984
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TDK Electronics Co., Ltd.
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Seitoku Saito
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Magnetic recording medium
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Patent number 4,416,943
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Issue date Nov 22, 1983
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TDK Electronics Co., Ltd.
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Seitoku Saito
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Magnetic recording medium
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Patent number 4,396,668
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Issue date Aug 2, 1983
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TDK Electronics Co., Ltd.
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Seitoku Saito
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G11 - INFORMATION STORAGE
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