Hiroshi Hosaka

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-magnetic substrate of magnetic head
- Patent number 5,242,865
- Issue date Sep 7, 1993
- Nippon Mining Co., Ltd
- Ryuichi Nagase
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Magnetic head comprising a laminated magnetic layer structure betwe...
- Patent number 5,231,555
- Issue date Jul 27, 1993
- Nippon Mining Co., Ltd
- Eiji Itoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-magnetic substrate of magnetic head, magnetic head and method f...
- Patent number 5,089,196
- Issue date Feb 18, 1992
- Nippon Mining Co., Ltd
- Eiji Itoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium with a zinc cobalt oxide non-magnetic sub...
- Patent number 5,026,614
- Issue date Jun 25, 1991
- Nippon Mining Co., Ltd
- Eiji Itoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for the removal of bismuth and antimony from aqueous sulfur...
- Patent number 4,501,666
- Issue date Feb 26, 1985
- Nippon Mining Co., Ltd.
- Takashi Ogata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for producing arsenous acid
- Patent number 4,483,845
- Issue date Nov 20, 1984
- Nippon Mining Co., Ltd
- Shunichi Kasai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...