| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Australia | 3 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | Canada | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | Argentina | 1 | |
| #7 | Brazil | 1 | |
| #8 | China | 1 | |
| #9 | Japan | 1 | |
| #10 | Republic of Korea | 1 | |
| #11 | Mexico | 1 | |
| #12 | Peru | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Unspecified technologies | |
| #3 | Foundations and excavations | |
| #4 | Scaffolding | |
| #5 | Unspecified technologies | |
| #6 | Sewers | |
| #7 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Strickland James K | 18 |
| #2 | Murphy Robert L | 9 |
| #3 | Sherrer Arthur Jr | 7 |
| #4 | Sherrer Jr Arthur | 2 |
| #5 | Strickland James | 2 |
| #6 | Jieemuzu Kei Sutoritsukurando | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5755982A | Concrete casting system | |
| US5303518A | Lined manhole assembly and liner | |
| US5230907A | Inside corner form |