Toshiyuki Okada

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Osaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tunnel boring machine
- Patent number 10,641,093
- Issue date May 5, 2020
- Hitachi Zosen Corporation
- Toshiyuki Okada
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunnel boring machine
- Patent number 9,957,796
- Issue date May 1, 2018
- Hitachi Zosen Corporation
- Toshiyuki Okada
- E21 - EARTH DRILLING MINING
Information Patent Grant
Segment roundness measuring device and segment roundness measuring...
- Patent number 9,500,078
- Issue date Nov 22, 2016
- Hitachi Zosen Corporation
- Toshiyuki Okada
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
TUNNEL BORING MACHINE
- Publication number 20180258765
- Publication date Sep 13, 2018
- Hitachi Zosen Corporation
- Toshiyuki OKADA
- E21 - EARTH DRILLING MINING
Information Patent Application
TUNNEL BORING MACHINE
- Publication number 20180073362
- Publication date Mar 15, 2018
- Hitachi Zosen Corporation
- Toshiyuki OKADA
- E21 - EARTH DRILLING MINING
Information Patent Application
SEGMENT ROUNDNESS MEASURING DEVICE AND SEGMENT ROUNDNESS MEASURING...
- Publication number 20150308268
- Publication date Oct 29, 2015
- HITACHI ZOSEN CORPORATION
- Toshiyuki Okada
- G01 - MEASURING TESTING