Toshiaki Uehara

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Yachiyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tunnel excavator with S-shaped soil plate
- Patent number 6,305,754
- Issue date Oct 23, 2001
- Ishikawajima-Harima Heavy Industries Co., Ltd.
- Toshiaki Uehara
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunnel excavator with crawler drive and roof support bearing frames
- Patent number 6,206,478
- Issue date Mar 27, 2001
- Ishikawajima-Harima Heavy Industries Co., Ltd.
- Toshiaki Uehara
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for continuously excavating shaft and tunnel
- Patent number 5,051,032
- Issue date Sep 24, 1991
- Taisei Corporation
- Toshihiko Bessho
- E21 - EARTH DRILLING MINING