| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Italy | 3 | |
| #2 | Denmark | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Brazil | 1 | |
| #5 | Luxembourg | 1 | |
| #6 | Sweden | 1 | |
| #7 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Roof coverings | |
| #2 | Shaping clay |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gerhaher M | 4 |
| #2 | Gerhaher F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1363354A | Sealing roofs rigid synthetic plastics foam sheets |