Herbert Heitkamp
13Patents
5h-index
16Co-inventors
63Inventor score
Filing activity: Apr 30, 1976 → Oct 24, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4457212A | Hydraulic ram | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4099388A | Drive shield for tunneling apparatus and a method for operating such a shield | Fixed Constructions | 17 | Expired |
| US4095436A | Method of, and apparatus for, controlling the advance of a tunnel drive shield | Fixed Constructions | 7 | Expired |
| US4343512A | Cutter drive regulation apparatus for a tunnelling machine | Fixed Constructions | 6 | Expired |
| US4432665A | Tunnel driving apparatus | Fixed Constructions | 5 | Expired |
| US4558629A | Hydraulic control means for pipe thrust-jacking apparatus | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4060992A | Method of and apparatus for laying a pipe-line | Fixed Constructions | 5 | Expired |
| US4224004A | Knife shield | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4412758A | Hydraulic control means | Fixed Constructions | 4 | Expired |
| US4439063A | Hydraulic control means | Fixed Constructions | 3 | Expired |
| US4155668A | Sealing means for the drive members of drive shields | Fixed Constructions | 2 | Expired |
| US4391553A | Hydraulic control systems for and methods of controlling the operation of tunnelling apparatus | Fixed Constructions | 1 | Expired |
| US5802744A | Method of and an apparatus for reconstructing railway track systems | Fixed Constructions | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.