Masayoshi Yokomatsu

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Tone-machi, Kita-Soma-Gun, Ibaragi Prefecture, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process and apparatus for the manufacture of a valved sack with sel...
- Patent number 4,725,262
- Issue date Feb 16, 1988
- Masayoshi Yokomatsu
- B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information Patent Grant
Paper sack with a valve for packaging pulverized or granular materials
- Patent number 4,604,757
- Issue date Aug 5, 1986
- Masayoshi Yokomatsu
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL