| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 3 | |
| #2 | Austria | 2 | |
| #3 | Switzerland | 2 | |
| #4 | Germany | 2 | |
| #5 | United States | 2 | |
| #6 | Belgium | 1 | |
| #7 | Italy | 1 | |
| #8 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Unspecified technologies | |
| #3 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Masuda Taizo | 3 |
| #2 | Ichise Yoshio | 3 |
| #3 | Yokota Hiroomi | 2 |
| #4 | Sato Kinichiro | 2 |
| #5 | Yokota Hrioomi | 1 |
| #6 | Higuchi Yoshiro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3936924A | Releaseable steel cable anchor and method for withdrawing the same | |
| US3899892A | Steel cable anchor and method for withdrawing the same |