Karl Ernst Friedrich
6Patents
3h-index
13Co-inventors
50Inventor score
Filing activity: Dec 28, 2001 → Oct 2, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6773514B1 | Method for producing non-grain oriented electric sheet steel | Chemistry; Metallurgy | 7 | Expired |
| US6582528B1 | Method of producing non-grain-oriented electrical sheet | Chemistry; Metallurgy | 5 | Expired |
| US9623473B2 | Method for producing a ring-pull top from a steel sheet provided with a protective layer and a ring-pull top produced thereby | Emerging Cross-Sectional Technologies | 3 | Active |
| US7501028B2 | Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its production | Chemistry; Metallurgy | 2 | Expired |
| US6767412B2 | Method for producing non-grain-oriented magnetic steel sheet | Chemistry; Metallurgy | 2 | Expired |
| US7658807B2 | Hot-rolled strip intended for the production of non-grain oriented electrical sheet and a method for the production thereof | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.