Naoto Watanabe

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thickness-reduced draw-formed can
- Patent number 5,139,889
- Issue date Aug 18, 1992
- Toyo Seikan Kaisha, Ltd.
- Katsuhiro Imazu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Easily-openable closure for seamed can
- Patent number 4,773,558
- Issue date Sep 27, 1988
- Toyo Seikan Kaisha, Ltd.
- Kazuo Taira
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Process for producing easily openable closure
- Patent number 4,762,579
- Issue date Aug 9, 1988
- Toyo Seikan Kaisha, Ltd.
- Takashi Shimizu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Easy-open can lid
- Patent number 4,762,245
- Issue date Aug 9, 1988
- Toyo Seikan Kaisha, Ltd.
- Hiroshi Matsubayashi
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL