Norbert Klupfel
7Patents
4h-index
16Co-inventors
46Inventor score
Filing activity: Nov 25, 1980 → Feb 13, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4558502A | Process and apparatus for assembling universal joints | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4383670A | Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4362687A | Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4679458A | Worm gear | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4621402A | Apparatus and method for assembling universal joints | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4584749A | Method for making cages for rolling bearings | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4435889A | Method and apparatus for the production of a rolling bearing cage | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.