Junichi Hirata

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Otokuni, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic tape cartridge
- Patent number 5,725,943
- Issue date Mar 10, 1998
- Hitachi Maxell, Ltd.
- Junichi Hirata
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Cobalt-containing iron oxide magnetic particles and method for the...
- Patent number 4,857,417
- Issue date Aug 15, 1989
- Hitachi Maxell, Ltd.
- Susumu Kitaoka
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for preparing cobalt-containing iron oxide magnetic particles
- Patent number 4,741,921
- Issue date May 3, 1988
- Hitachi Maxell, Ltd.
- Susumu Kitaoka
- G11 - INFORMATION STORAGE