U.S. Products
18Patents
3Active
18Granted
35Portfolio score
Filing activity: Sep 26, 1986 → Jul 13, 2012 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD343706S | High pressure carpet extractor | General | 38 | Expired |
| US5493754A | Fabric cleaner with ozone injection | Performing Operations; Transporting | 27 | Expired |
| US5001806A | Kit for fabric cleaning device | Human Necessities | 19 | Expired |
| US5449988A | Vacuum motor control including float switch and in-rush current restraint | Emerging Cross-Sectional Technologies | 18 | Expired |
| USD332330S | High pressure carpet extractor | General | 17 | Expired |
| US4803792A | Firearm cleaning device | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US7627926B2 | Cleaning apparatus | Performing Operations; Transporting | 15 | Active |
| US8397343B2 | Cleaning apparatus | Performing Operations; Transporting | 12 | Active |
| US8220107B2 | Cleaning apparatus | Performing Operations; Transporting | 11 | Active |
| US5584094A | Dual-pressure extraction cleaner | Human Necessities | 11 | Expired |
| US5287588A | Upholstery and carpet cleaning equipment including external heat exchanger | Human Necessities | 9 | Expired |
| US5611868A | Fabric cleaner with ozone injection | Performing Operations; Transporting | 8 | Expired |
| US4803466A | Cleaning machine for carpet, upholstery and draperies | Physics | 7 | Expired |
| US5870791A | Air cooled floor polishing machine | Human Necessities | 7 | Expired |
| USD343705S | Air cooled floor polishing machine | General | 5 | Expired |
| US5229908A | Multiple circuit overload protection device | Emerging Cross-Sectional Technologies | 3 | Expired |
| USD302613S | Portable cleaning machine for carpets, draperies and upholstery | General | 2 | Expired |
| USD326545S | External heat exchanger for upholstery and carpet cleaning equipment | General | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.