| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 3 | |
| #2 | Spain | 3 | |
| #3 | Austria | 1 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Cleaning heat-exchanger internal surfaces | |
| #2 | Cleaning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sandblom Gideon Efraim | 7 |
| #2 | Gideon Efraim Sandblom | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB113619A | Improved Scale or Incrustation Removing Apparatus. | |
| US1181616A | Apparatus for removing boiler-scales. | |
| CA198035A | Apparatus for removing boiler scales |