| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 6 | |
| #2 | Finland | 6 | |
| #3 | WIPO (World Intellectual Property Organization) | 6 | |
| #4 | Germany | 5 | |
| #5 | China | 3 | |
| #6 | Denmark | 3 | |
| #7 | Norway | 3 | |
| #8 | Brazil | 2 | |
| #9 | Republic of Korea | 2 | |
| #10 | Poland | 2 | |
| #11 | Yugoslavia (Serbia and Montenegro) | 2 | |
| #12 | Canada | 1 | |
| #13 | German Democratic Republic | 1 | |
| #14 | Turkey | 1 | |
| #15 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Shafts | |
| #3 | Doors and windows | |
| #4 | Indexing scheme relating to hinges | |
| #5 | Hinges for doors or windows | |
| #6 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wendt Heinz | 10 |
| #2 | Pataj Bruno | 9 |
| #3 | Alberts Enno | 6 |
| #4 | Nehl Fred | 5 |
| #5 | Mertens Manfred | 5 |
| #6 | Klammer Heinrich | 5 |
| #7 | Mertens Manfred Dipl Ing | 3 |
| #8 | Berlips Manfred | 2 |
| #9 | Joseph Richard | 2 |
| #10 | Gloeckner Volker Dipl Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0721881A1 | Bulkhead for the compartmentization of a ship's deck | |
| EP0768970A1 | Ship's hatch cover | |
| CN1126975A | Slide bearing, in particular for hatchway covers on board ships | |
| DE4330034C1 | Hatch cover arrangement on a cargo ship | |
| DE4318706C1 | Support for a ship hatch cover | |
| DE4345290C2 | Adjustable sealing strip for hatch cover on ship | |
| DE4220435A1 | Ship, especially ferry, with a bow visor | |
| EP0261425A1 | Seal for a hatch cover of a merchant navy ship |