| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 2 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Israel | 2 | |
| #6 | WIPO (World Intellectual Property Organization) | 2 | |
| #7 | Australia | 1 | |
| #8 | Dominican Republic | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | Mexico | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Environmental technology | |
| #3 | Materials and metallurgy | |
| #4 | Surface technology and coating |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spreen Richard P | 8 |
| #2 | Spreen Richard | 5 |
| #3 | Spreen Richard D | 3 |
| #4 | Richard P Spreen | 2 |
| #5 | Warter Stephen W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2020032512A1 | Environmentally responsible insulating construction blocks and structures | |
| US2018343811A1 | Tree cabling system for roof decks | |
| US2018257984A1 | Environmentally responsible insulating construction blocks and structures | |
| CA3063526A1 | Environmentally responsible insulating construction blocks and structures | |
| CA3002527A1 | Environmentally responsible insulating construction blocks |