Ralf Sauer
67Patents
10h-index
27Co-inventors
78Inventor score
Filing activity: Sep 10, 1991 → Nov 25, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5766283A | Dust filter bag for a vacuum cleaner | Emerging Cross-Sectional Technologies | 30 | Expired |
| USD340445S | Dual component keyboard unit | General | 30 | Expired |
| US8092562B2 | Holding plate for a vacuum cleaner filter bag | Emerging Cross-Sectional Technologies | 30 | Active |
| US5544186A | Gas laser for emitting light modulated at two different wavelengths and an arrangement incorporating the gas laser to detect a gaseous substance | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD341134S | Keyboard | General | 19 | Expired |
| US5468271A | Dust filter bag for a vacuum cleaner | Human Necessities | 17 | Expired |
| USD346376S | Keyboard | General | 14 | Expired |
| US5981287A | Method for the investigation of house dust | Physics | 13 | Expired |
| US8449639B2 | Vacuum cleaner filter bag | Human Necessities | 13 | Active |
| US8066803B2 | Vacuum cleaner filter bag | Emerging Cross-Sectional Technologies | 10 | Active |
| USD365552S | Keyboard | General | 10 | Expired |
| US9232879B2 | Retaining plate for a vacuum cleaner filter bag | Human Necessities | 8 | Active |
| US8372174B2 | Vacuum filter cleaner bag | Human Necessities | 7 | Active |
| US8137500B2 | Sprayable low-viscosity rubber damping compounds | Chemistry; Metallurgy | 7 | Active |
| US8097054B2 | Dust filter bag | Emerging Cross-Sectional Technologies | 5 | Active |
| US8070858B2 | Filter bag for a vacuum cleaner and use thereof | Emerging Cross-Sectional Technologies | 4 | Active |
| US9022565B2 | Method and apparatus for checking the centering of spectacles worn by a spectacle wearer | Human Necessities | 4 | Active |
| US8702828B2 | Flat bag for vacuum cleaners | Human Necessities | 3 | Active |
| US5359166A | Keyboard, especially for electronic data-processing apparatuses | Electricity | 3 | Expired |
| US8758465B2 | Block-base bag for vacuum cleaners | Human Necessities | 3 | Active |
| US8702827B2 | Flat bag for vacuum cleaners | Human Necessities | 3 | Active |
| US11602252B2 | Vacuum cleaner filter bag made from recycled plastic | Performing Operations; Transporting | 2 | Active |
| US9493687B2 | Heat-curing reactive systems | Chemistry; Metallurgy | 2 | Active |
| US8080076B2 | Nonwoven layer for a filter and filter medium | Performing Operations; Transporting | 2 | Expired |
| US8479356B2 | Vacuum cleaner filter bag comprising a sealing device | Human Necessities | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.