| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | WIPO (World Intellectual Property Organization) | 2 | |
| #3 | Canada | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Indexing scheme relating to hinges | |
| #2 | Wing fittings | |
| #3 | Unspecified technologies | |
| #4 | Bolts for doors or windows | |
| #5 | Hinges for doors or windows | |
| #6 | Unspecified technologies | |
| #7 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yulkowski Leon | 13 |
| #2 | Gebhart Steve | 4 |
| #3 | Edwards Gerard | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2016115725A1 | Door operator and clutch | |
| WO2016018649A2 | Gear assembly with spiral gears | |
| US2010242368A1 | Electrical door operator | |
| US2009249699A1 | Concealed electrical door operator | |
| US5297315A | Suspension for hinged door | |
| US4545607A | Door construction | |
| US4093284A | Door construction | |
| US3969845A | Door construction |