| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Sweden | 2 | |
| #5 | Switzerland | 1 | |
| #6 | Finland | 1 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Phosphatic fertilisers | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wahlberg Arvo | 7 |
| #2 | Wahlberg Anna-Maija | 3 |
| #3 | Wahlberg A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FI864174A0 | Preparation process for combined phosphorus fertilizers and soil enhancers. | |
| CA1287746C | Production method of combined phosphorus fertilizer and soil conditioner | |
| CA1287745C | Production method of combined phosphorus fertilizer and soil conditioner |