Paul Opprecht
7Patents
0Active
7Granted
26Portfolio score
Filing activity: Mar 18, 1976 → Nov 5, 1984
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4591687A | Electrical resistance-pressure welding process for welding parts of workpieces made of aluminum materials and an apparatus and electrode therefor | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4160892A | Method and apparatus for seam welding overlapped edges | Performing Operations; Transporting | 22 | Expired |
| US4495397A | Projection for resistance welding of soft metals | Performing Operations; Transporting | 18 | Expired |
| US4850214A | Method of fabricating a projection for resistance welding | Performing Operations; Transporting | 13 | Expired |
| US4536636A | Method and machine for electrical resistance roll seam welding with a single electrode-wire | Performing Operations; Transporting | 7 | Expired |
| US4395614A | Apparatus to suppress oxidation during resistance welding | Performing Operations; Transporting | 4 | Expired |
| US4350862A | Feeding device in a welding machine for feeding can bodies to electrode rolls | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.