| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Materials and metallurgy | |
| #3 | Surface technology and coating | |
| #4 | Environmental technology | |
| #5 | Machine tools | |
| #6 | Textiles and paper | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Building materials | |
| #3 | Shaping clay | |
| #4 | Paper coating | |
| #5 | Structural elements | |
| #6 | Layered products | |
| #7 | Sawing | |
| #8 | Climate change mitigation in wastewater treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Armstrong Morgan K | 11 |
| #2 | Johnson Frank W | 1 |
| #3 | Johnson Frank William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1399455A | Weather-board | |
| US1384037A | Plastic composition | |
| US1367292A | Apparatus for making plaster-board | |
| US1348387A | Art of making plaster-board | |
| CA187415A | Plaster board | |
| US1301893A | Plaster-board composition. | |
| US1278821A | Plaster-board. | |
| CA167596A | Cutter for wall board | |
| US1130979A | Cutting-machine. | |
| US1076261A | Compo-board. | |
| CA196139A | Plaster board making | |
| CA206105A | Plastic mixture | |
| CA196140A | Weather board |