Ralf Steffens
1Patents
0Active
1Granted
22Portfolio score
Filing activity: Nov 14, 2000 → Nov 14, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6497563B1 | Dry-compressing screw pump having cooling medium through hollow rotor spindles | Mechanical Engineering; Lighting; Heating | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.