Masahiko Matsui

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tape cassette
- Patent number 4,844,377
- Issue date Jul 4, 1989
- Matsushita Electric Industrial Co., Ltd.
- Yoshinori Shiomi
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cassette with improved cover structure
- Patent number 4,809,113
- Issue date Feb 28, 1989
- Matsushita Electric Industrial Co., Ltd.
- Akihiro Nishimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cassettes having bottom grooves for use in tape recorder havin...
- Patent number 4,803,575
- Issue date Feb 7, 1989
- Matsushita Electric Industrial Co., Ltd.
- Akihiro Nishimura
- G11 - INFORMATION STORAGE