Youan; Toyohiko
Patent Applications and Registrations
Patent applications and USPTO patent grants for Youan; Toyohiko.The latest application filed is for "reamer apparatus for ground boring machine".
- Youan; Toyohiko - Hirakata JP
- Youan, Toyohiko - Hirakata-Shi JP
- Youan, Toyohiko - Osaka JP
- Youan; Toyohiko - Kawasaki JP
- Youan, Toyohiko - Kawasaki-shi JP
| Patent | Date |
|---|---|
| Reamer apparatus for ground boring machine Grant 7,128,168 - Youan October 31, 2 | 2006-10-31 |
| Ground drilling machine Grant 6,932,171 - Youan , et al. August 23, 2 | 2005-08-23 |
| Leading body for ground drilling and ground drilling machine Grant 6,913,094 - Youan , et al. July 5, 2 | 2005-07-05 |
| Pipe burying method App 20050034896 - Youan, Toyohiko | 2005-02-17 |
| Reamer apparatus for ground boring machine App 20050034897 - Youan, Toyohiko | 2005-02-17 |
| Ground drilling machine App 20030226691 - Youan, Toyohiko ; et al. | 2003-12-11 |
| Leading body for ground drilling and ground drilling machine App 20030226692 - Youan, Toyohiko ; et al. | 2003-12-11 |
| Ground drilling machine and rod exchanger utilized therefor Grant 6,637,525 - Watanabe , et al. October 28, 2 | 2003-10-28 |
| Ground drilling machine and rod exchanger utilized therefor App 20020062994 - Watanabe, Kentaro ; et al. | 2002-05-30 |
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