INVACARE CORPORATION
324Patents
146Active
324Granted
53Portfolio score
Filing activity: Mar 1, 1976 → Nov 2, 2022 · 73 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5961561A | Method and apparatus for remote maintenance, troubleshooting, and repair of a motorized wheelchair | Emerging Cross-Sectional Technologies | 284 | Expired |
| US7290546B2 | Nasal mask | Human Necessities | 159 | Expired |
| US5917135A | Gas concentration sensor and control for oxygen concentrator utilizing gas concentration sensor | Physics | 133 | Expired |
| US5988165A | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Performing Operations; Transporting | 131 | Expired |
| US5294141A | Attended to self propelled convertible pivoting wheelchair | Human Necessities | 123 | Expired |
| US6460641B1 | Mid-wheel drive wheelchair with front wheel multiple bias suspension and anti-tip assembly | Emerging Cross-Sectional Technologies | 116 | Expired |
| US5906672A | Closed-loop feedback control for oxygen concentrator | Performing Operations; Transporting | 115 | Expired |
| US7152598B2 | System and method for providing a breathing gas | Human Necessities | 114 | Expired |
| US4989890A | Length and width adjustable wheelchair | Emerging Cross-Sectional Technologies | 114 | Expired |
| US5575348A | Powered wheelchair with adjustable center of gravity and independent suspension | Emerging Cross-Sectional Technologies | 113 | Expired |
| US5848658A | Adjustable front wheel stabilizer for power wheelchair | Emerging Cross-Sectional Technologies | 113 | Expired |
| US6554086B1 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 112 | Expired |
| US7040429B2 | Wheelchair suspension | Emerging Cross-Sectional Technologies | 111 | Expired |
| US4500102A | Sports wheelchair | Emerging Cross-Sectional Technologies | 111 | Expired |
| US6302107A | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Performing Operations; Transporting | 107 | Expired |
| US7621274B2 | Nasal mask | Human Necessities | 103 | Active |
| US7722700B2 | Apparatus and method of providing concentrated product gas | Chemistry; Metallurgy | 103 | Active |
| USD427675S | Housing for a CPAP device | General | 103 | Expired |
| US5366037A | Powered wheelchair having drive motors integrated into driven wheels | Performing Operations; Transporting | 103 | Expired |
| US4721321A | Wheelchair with adjustable rear canes | Emerging Cross-Sectional Technologies | 102 | Expired |
| US7455717B2 | Apparatus and method of providing concentrated product gas | Performing Operations; Transporting | 97 | Active |
| US6152134A | Oxygen conserving device | Human Necessities | 96 | Expired |
| US6990980B2 | Carbon dioxide-based Bi-level CPAP control | Human Necessities | 88 | Expired |
| US5853059A | Powered wheelchair with adjustable center of gravity and independent suspension | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6851711B2 | Vehicle having an anti-dive/lockout mechanism | Performing Operations; Transporting | 82 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.