| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 6 | |
| #2 | United States | 6 | |
| #3 | Japan | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | Canada | 2 | |
| #6 | German Democratic Republic | 2 | |
| #7 | Germany | 2 | |
| #8 | Hong Kong | 2 | |
| #9 | USSR (Union of Socialist Soviet Republics) | 2 | |
| #10 | South Africa | 2 | |
| #11 | Brazil | 1 | |
| #12 | China | 1 | |
| #13 | Spain | 1 | |
| #14 | Republic of Korea | 1 | |
| #15 | Sweden | 1 | |
| #16 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Rolling metal | |
| #2 | Clutches and brakes | |
| #3 | Shafts | |
| #4 | Nails | |
| #5 | Unspecified technologies | |
| #6 | Special electric heating or lighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kark Uwe | 28 |
| #2 | Uubue Karuku | 3 |
| #3 | Klein Karl-Heinz Dr | 2 |
| #4 | Kark Uve | 2 |
| #5 | Uwe Kark | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP1312430A1 | Rolling device | |
| EP1066890A1 | Arrangement for changing the nut securing a rolling ring | |
| EP0554248A1 | Roller for a roll stand with an interchangeable roller ring and a divided roller body | |
| EP0340726A1 | Electrode supporting arm for an electric arc furnace | |
| US4841612A | Roll device comprising a shaft and at least one roll ring arranged thereon | |
| DE3316289A1 | COMPOSITE ROLLER WITH A MEANS OF A CONE SLEEVE ON THE ROLL RING HOLDED | |
| US4099311A | Composite roll with roll ring of material which is sensitive to tensile stress |