Kazunari Kawai

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Hirakata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Auxiliary cutter units of a shield machine
- Patent number 5,547,260
- Issue date Aug 20, 1996
- Kabushiki Kaisha Komatsu Seisakusho
- Kazunari Kawai
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter bit abrasive detecting device of shield machine
- Patent number 5,438,860
- Issue date Aug 8, 1995
- Kabushiki Kaisha Komatsu Seisakusho
- Kazunari Kawai
- E21 - EARTH DRILLING MINING
Information Patent Grant
Deformed shield tunneling method and tunneling machine
- Patent number 5,110,188
- Issue date May 5, 1992
- Kabushiki Kaisha Komatsu Seisakusho
- Kazunari Kawai
- E21 - EARTH DRILLING MINING