Toshihiko Yokoyama

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Sendai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetically traceable explosives with stability and a method for t...
- Patent number 4,537,645
- Issue date Aug 27, 1985
- Tohoku Metal Industries, Ltd.
- Tadashi Yamaguchi
- C06 - EXPLOSIVES MATCHES
Information Patent Grant
Method for the preparation of magnetically traceable explosives
- Patent number 4,455,179
- Issue date Jun 19, 1984
- Tohoku Metal Industries, Ltd.
- Tadashi Yamaguchi
- C06 - EXPLOSIVES MATCHES