Robert A. Salo
55Patents
19h-index
37Co-inventors
84Inventor score
Filing activity: Jan 13, 1995 → Aug 21, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6712868B2 | Bagless canister vacuum cleaner | Emerging Cross-Sectional Technologies | 139 | Expired |
| US6341404B1 | Upright vacuum cleaner with cyclonic airflow pathway | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6533871B2 | Carpet extractor with dual nozzles for dual brushrolls | Human Necessities | 50 | Expired |
| US6721990B2 | Carpet extractor with dual nozzles for dual brushrolls | Human Necessities | 40 | Expired |
| US7632324B2 | Single stage cyclone vacuum cleaner | Emerging Cross-Sectional Technologies | 40 | Active |
| US6154917A | Carpet extractor housing | Human Necessities | 38 | Expired |
| US5561885A | Portable hand-held vacuum cleaner | Human Necessities | 36 | Expired |
| USD418265S | Upright vacuum cleaner | General | 35 | Expired |
| USD439383S | Nozzle base for a vacuum cleaner | General | 33 | Expired |
| US8209815B2 | Dual stage cyclonic dust collector | Human Necessities | 33 | Active |
| US6108861A | Extendable hose for a vacuum cleaner | Human Necessities | 31 | Expired |
| US5869947A | Rechargeable hand held vacuum cleaner with electrical connections circuit board with spring contacts | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6513188B2 | Mixing pump for carpet extractor | Emerging Cross-Sectional Technologies | 30 | Expired |
| USD428677S | Upper handle portion of carpet extractor | General | 30 | Expired |
| US8370991B2 | Supply tank assembly for an extractor cleaning machine | Human Necessities | 28 | Active |
| US6145159A | Combination dirty fluid tank and nozzle for a carpet extractor | Human Necessities | 28 | Expired |
| US6325864A | Combination dirty fluid tank and nozzle for a carpet extractor | Human Necessities | 26 | Expired |
| USRE39473E1 | Upright vacuum cleaner with cyclonic airflow pathway | General | 26 | Expired |
| US8756752B2 | Tank tray for an extractor cleaning machine | Electricity | 22 | Active |
| US8726461B2 | Dual stage cyclonic vacuum cleaner | Performing Operations; Transporting | 19 | Active |
| USD460229S1 | Clean water tank for a carpet extractor | General | 18 | Expired |
| USD439381S | Cleaning fluid tank for carpet extractor | General | 16 | Expired |
| US9320402B2 | Supply tank for an extractor cleaning machine | Human Necessities | 16 | Active |
| USD453867S1 | Carpet extractor tool handle | General | 16 | Expired |
| US5850666A | Upright vacuum cleaner | Human Necessities | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.