Toyohiko Youan
Inventor
Stats
- 4 US patents issued
- 5 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 4 US Patents Issued
- 5 US Applications Filed
- 45 Total Citation Count
- Mar 24, 2004 Most Recent Filing
- Nov 19, 2001 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| KOMATSU LTD. | 2
4 3 | 2001
2003 2004 |
Inventor Addresses
| Address | Duration |
|---|---|
| Hirakata, JP | Jul 05, 05 - Oct 31, 06 |
| Hirakata-Shi, JP | Feb 17, 05 - Feb 17, 05 |
| Kawasaki, JP | Oct 28, 03 - Oct 28, 03 |
| Kawasaki-shi, JP | May 30, 02 - May 30, 02 |
| Osaka, JP | Dec 11, 03 - Dec 11, 03 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| E21B: | EARTH OR ROCK DRILLING | 5 |
| E21D: | SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS | 2 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 7128168 | 2006 | Reamer apparatus for ground boring machine | 4 |
| 6932171 | 2005 | Ground drilling machine | 0 |
| 6913094 | 2005 | Leading body for ground drilling and ground drilling machine | 0 |
| 2005/0034,896 | 2005 | Pipe burying method | 17 |
| 2005/0034,897 | 2005 | Reamer apparatus for ground boring machine | 11 |
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