| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Earth drilling | |
| #3 | General building constructions | |
| #4 | Unspecified technologies | |
| #5 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bullivant Roger A | 13 |
| #2 | Bullivant Roger Alfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5437519A | Piles and pile forming methods | |
| US5145291A | Method for forming a piling beneath a structure | |
| US4659256A | Piles | |
| US4605339A | Situ pile construction in ground liable to uplift |