David B. Rennecker
11Patents
8h-index
30Co-inventors
72Inventor score
Filing activity: Jul 9, 1984 → Oct 20, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5983442A | Carpet extractor with automatic conversion | Human Necessities | 48 | Expired |
| US5961676A | Hard bag door with air directing arrangement | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4554698A | Dispensing arrangement for an upright vacuum cleaner | Human Necessities | 23 | Expired |
| USD600868S1 | Mounting collar for a filter bag | General | 19 | Expired |
| US4720891A | Member with deformable brush retaining tabs | Human Necessities | 11 | Expired |
| US7299521B2 | Brush assembly distribution apparatus | Human Necessities | 9 | Expired |
| US7794516B2 | Filter bag mounting assembly | Human Necessities | 9 | Active |
| US9713411B2 | Surface-treatment apparatus and head unit | Human Necessities | 8 | Active |
| US6419169B1 | Spray nozzle for a carpet and upholstery extractor | Human Necessities | 8 | Expired |
| US5863309A | Hard bag door with air directing arrangement | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5608946A | Control cable and wiring arrangement for a vaccum cleaner | Human Necessities | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.