| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | Sweden | 5 | |
| #3 | Austria | 3 | |
| #4 | Switzerland | 3 | |
| #5 | United Kingdom | 2 | |
| #6 | Netherlands | 1 | |
| #7 | Norway | 1 | |
| #8 | United States | 1 | |
| #9 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Furniture and games | |
| #3 | Basic materials chemistry | |
| #4 | Machines | |
| #5 | Control | |
| #6 | Thermal processes | |
| #7 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sundberg Hardy Mikael | 10 |
| #2 | Hardy Mikael Sundberg | 3 |
| #3 | Mikael Sundberg Hardy | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE2420729A1 | Flush-toilet for ships, holiday homes, etc. - incorporates filter and pump, for repeated use of flushing water | |
| DE1753103A1 | Toilet | |
| US3436765A | Incineration type sanitary closets | |
| GB1045592A | Draught control device for firing systems | |
| DE1242787B | Device for automatic regulation of the negative pressure in the combustion chamber of a furnace | |
| GB831578A | Improvements in or relating to apparatus including a liquid level indicator |