Siegfried Schonwald
20Patents
10h-index
9Co-inventors
64Inventor score
Filing activity: Feb 13, 1975 → Feb 2, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4443158A | Liquid ring pump with a control disk arranged between the impeller housing and the cover | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4204802A | Side channel compressor | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4657487A | Vacuum generating apparatus including liquid ring pump, pre-separator, two heat exchangers and fine separator | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4141674A | Impeller for a ring compressor | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4247260A | Pressure regulated water supply system | Electricity | 14 | Expired |
| US4194527A | Pressure limiting valve | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4565498A | Rotary gas compressor | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US3982848A | Side channel ring compressor including a channel break decompression nozzle | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4194798A | Side channel compressor with at least one bearing arranged at the housing cover of the side channel compressor | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4172678A | Fastening a rotor on a shaft | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4806073A | Dust stripper for use in a side-channel compressor | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4465436A | Radial piston compressor | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4006998A | Ring compressor | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4610602A | Rotary gas compressor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US3942906A | Side channel ring compressor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4516912A | Compressor arrangement for a heat pump installation | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4363598A | Multistage side-channel compressor | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4436490A | Compressor and lubricating pump assembly | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4451211A | Radial piston compressor and drive motor coupling arrangement | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4492530A | Compressor unit | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.