Franz-Josef Puttmann
52Patents
10h-index
13Co-inventors
75Inventor score
Filing activity: Feb 2, 1989 → Jul 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5937954A | Method for directional drilling | Fixed Constructions | 34 | Expired |
| US6012536A | Method for steering a ground-drilling machine | Fixed Constructions | 32 | Expired |
| US6340270B2 | Apparatus and method for the longitudinal splitting of pipes laid underground | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6244783A | Widening apparatus | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5289887A | Method of operating an earth boring machine | Fixed Constructions | 16 | Expired |
| US8757931B2 | Pipe guide adapter | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US7093671B2 | Pneumatic rock-boring device and method for starting such a device | Fixed Constructions | 11 | Expired |
| US7111695B2 | Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium | Fixed Constructions | 11 | Expired |
| US5148878A | Ram boring machine | Fixed Constructions | 10 | Expired |
| US4953626A | Ram boring machine having a pull-and-turn reversing gear | Fixed Constructions | 10 | Expired |
| US6199643A | Method and apparatus for directional boring | Fixed Constructions | 9 | Expired |
| US5954145A | Reversible percussion piston drill apparatus | Fixed Constructions | 8 | Expired |
| US7726028B2 | Cutting device for pipelines | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7938205B2 | Boring head method and boring head for a ground boring device | Fixed Constructions | 7 | Active |
| US7874382B2 | Pneumatically reversible ram boring device | Fixed Constructions | 6 | Active |
| US5924500A | Steerable boring machine | Fixed Constructions | 6 | Expired |
| US5960892A | Automatically driven pile driver drilling device | Fixed Constructions | 5 | Expired |
| US7270197B2 | Steerable soil displacement hammer | Fixed Constructions | 5 | Expired |
| US6238141A | Apparatus for static underground drilling | Fixed Constructions | 4 | Expired |
| US6267187A | Boring apparatus with coupling for rapid connection of drill string segments | Fixed Constructions | 4 | Expired |
| US7954565B2 | Thread retention for an earth boring device | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US6364036B1 | Automatic rod assembly | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6371220B1 | Pneumatically reversible ram drilling tool | Fixed Constructions | 4 | Expired |
| US9016404B2 | Ram boring device | Fixed Constructions | 3 | Active |
| US9328560B2 | Ground-drilling device | Fixed Constructions | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.