| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 4 | |
| #2 | Norway | 4 | |
| #3 | Sweden | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Denmark | 1 | |
| #6 | Finland | 1 | |
| #7 | United States | 1 | |
| #8 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Unspecified technologies | |
| #3 | Pistons and sealings | |
| #4 | Doors and windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Caillet R | 14 |
| Publication | Filing date | Title |
|---|---|---|
| GB2036164A | Ship's hold hatches | |
| GB1349670A | Hatch cover assembly |