Shu Ishiguro

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium
- Patent number 4,835,049
- Issue date May 30, 1989
- Konica Corporation
- Shu Ishiguro
- G11 - INFORMATION STORAGE
Information Patent Grant
Highly running-endurant magnetic recording medium
- Patent number 4,818,606
- Issue date Apr 4, 1989
- Konica Corporation
- Noboru Koyama
- G11 - INFORMATION STORAGE