| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 30 | |
| #2 | United States | 4 | |
| #3 | Canada | 3 | |
| #4 | Denmark | 1 | |
| #5 | France | 1 | |
| #6 | Japan | 1 | |
| #7 | Netherlands | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering | |
| #2 | Foundations and excavations | |
| #3 | Steam generation | |
| #4 | Ships | |
| #5 | Motor vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heien Sigurd | 38 |
| #2 | Loevik Alf | 5 |
| #3 | Loevik Alf Johan | 1 |
| #4 | Shigurudo Heien | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5284689A | Equipment for turninggout to boat and or haulinggin from boat transfer hose for fluid such as oil or gas and the like | |
| US4000713A | Combined mooring and transfer means for oil and other liquid | |
| CA1026574A | Offshore oil production platform | |
| US3946568A | Offshore oil production platform | |
| CA977561A | Offshore terminal | |
| US3913335A | Offshore terminal | |
| CA977562A | Offshore harbour tank and installation |