| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 3 | |
| #2 | Austria | 1 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | New Zealand | 1 | |
| #8 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #9 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Separating solids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bjerkan Morten | 3 |
| #2 | Bostrom F | 2 |
| #3 | Bostroem F | 2 |
| #4 | Bostrem Folke | 1 |
| #5 | Bostrom Folke | 1 |
| #6 | Bostroem Folke | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NZ196252A | Grading plant with self-cleaning screen | |
| AU6057280A | Grading plant | |
| ZA8004120B | Grading plant | |
| FI802161A | Sorting arrangement |