| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 1 | |
| #2 | Canada | 1 | |
| #3 | China | 1 | |
| #4 | Czechoslovakia | 1 | |
| #5 | German Democratic Republic | 1 | |
| #6 | Denmark | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Finland | 1 | |
| #9 | Hungary | 1 | |
| #10 | Norway | 1 | |
| #11 | Poland | 1 | |
| #12 | Portugal | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Foundry moulding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sommer Hermann W | 9 |
| #2 | Sommer Hermann W Dr Dipl-Ing | 1 |
| #3 | Sommer Herman W | 1 |
| #4 | Sommer Hermann W Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0446402A1 | Method for repreparation of foundry sand |