Erich Kiefer
12Patents
6h-index
19Co-inventors
63Inventor score
Filing activity: Oct 11, 1974 → May 13, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5143681A | Extrusion blow molding of multilayer hollow bodies with layer disturbances limited to flash | Performing Operations; Transporting | 22 | Expired |
| US5014873A | Barrel of thermoplastic material | Performing Operations; Transporting | 21 | Expired |
| US4424178A | Procedure and device for production of a preform of thermoplastic synthetic material by means of extrusion | Performing Operations; Transporting | 21 | Expired |
| US5576034A | Apparatus for the production of hollow bodies from thermoplastic material by an extrusion blow molding process | Performing Operations; Transporting | 11 | Expired |
| US6488884B1 | Process and apparatus for producing hollow bodies from thermoplastic material | Performing Operations; Transporting | 8 | Expired |
| US5110519A | Process for minimizing disturbance of multi-layer laminate material in extrusion of multi-layer preforms for blow molding of hollow bodies | Performing Operations; Transporting | 6 | Expired |
| US5250238A | Process for blow molding hollow bodies with symmetric mold portion movement | Performing Operations; Transporting | 6 | Expired |
| US5409647A | Process for the production of hollow bodies from thermoplastic material | Performing Operations; Transporting | 5 | Expired |
| US5368462A | Blow molding apparatus for the production of a hollow body of thermoplastic material | Performing Operations; Transporting | 5 | Expired |
| US3989437A | Moulding apparatus | Performing Operations; Transporting | 4 | Expired |
| US5141698A | Extrusion blow molding of multilayer hollow bodies with layer disturbances limited to flash | Performing Operations; Transporting | 3 | Expired |
| US6923636B2 | Blow molding machine | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.