| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | United States | 6 | |
| #3 | South Africa | 5 | |
| #4 | Italy | 4 | |
| #5 | Denmark | 3 | |
| #6 | Sweden | 3 | |
| #7 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Transport | |
| #3 | Chemical engineering | |
| #4 | Engines, pumps and turbines | |
| #5 | Medical technology | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Pumps | |
| #3 | Cleaning | |
| #4 | Spraying devices | |
| #5 | Unspecified technologies | |
| #6 | Object sterilising | |
| #7 | Chemical or physical processes | |
| #8 | Certain plastics | |
| #9 | Preparation of materials | |
| #10 | Scaffolding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hammelmann P | 17 |
| #2 | Hammelmann Paul | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1537605A | Plunger pumps | |
| US3827634A | Cleaning device | |
| US3791394A | Apparatus for cleaning vessels having an inlet |