| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 33 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United States | 2 | |
| #4 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Tools for connecting or disengaging | |
| #2 | Shafts | |
| #3 | Pipes | |
| #4 | Vehicle wheels | |
| #5 | Handles for hand implements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kaiser Emil | 28 |
| #2 | Kleinbongartz Alfred | 28 |
| #3 | Kleinbongartz Wolfgang | 8 |
| #4 | Alfred Kleinbongartz | 3 |
| #5 | Emil Kaiser | 3 |
| #6 | Kleinbongartz Wolfgang Ing Gra | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP1110673A2 | Clamp with fixed and movable jaw | |
| EP1004405A2 | Extractor with quick adjusting spindle | |
| EP0958892A2 | Clamping device, especially in the shape of a screw clamp | |
| EP0894575A2 | Clamp | |
| TW352355B | Screw clamp | |
| DE2436311A1 | Joint separator for flanged pipes - has jaws inserted in bolt holes and point forced into gap by screw |