Friedrich Eichhorn
4Patents
0Active
4Granted
22Portfolio score
Filing activity: Jan 26, 1977 → Apr 28, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4329561A | Method of ensuring the maintenance of constant quality of spot welds | Performing Operations; Transporting | 85 | Expired |
| US4151389A | Method of and apparatus for welding sheet steel panels | Performing Operations; Transporting | 5 | Expired |
| US4420676A | Welding apparatus | Performing Operations; Transporting | 2 | Expired |
| US4303822A | Apparatus for welding steel sheets | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.