Mitsuru Ieki

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing a heat exchanger
- Patent number 4,603,460
- Issue date Aug 5, 1986
- Matsushita Electric Industrial Co., Ltd.
- Nobuyuki Yano
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Speaker diaphragm and method of preparation of the same
- Patent number 4,291,781
- Issue date Sep 29, 1981
- Matsushita Electric Industrial Co., Ltd.
- Hirotoshi Niguchi
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Diaphragm for acoustic equipment
- Patent number 4,273,900
- Issue date Jun 16, 1981
- Matsushita Electric Industrial Co., Ltd.
- Kosaku Murata
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Acoustic diaphragm with polyurethane elastomer coating
- Patent number 4,140,203
- Issue date Feb 20, 1979
- Matsushita Electric Industrial Co., Ltd.
- Hirotoshi Niguchi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS