Takumi Usui

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Data storage cassette and data recording and reproducing device
- Patent number 6,227,477
- Issue date May 8, 2001
- Aiwa Co., Ltd.
- Shoji Komatsuzaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of recording/reproducing digital signal on magnetic recordin...
- Patent number 6,172,831
- Issue date Jan 9, 2001
- Aiwa Co., Ltd.
- Takumi Usui
- G11 - INFORMATION STORAGE
Information Patent Grant
Auto disc changer
- Patent number 5,864,522
- Issue date Jan 26, 1999
- AIWA Co., Ltd.
- Shigeki Sugano
- G11 - INFORMATION STORAGE