Gerold Goertzen
37Patents
19h-index
17Co-inventors
78Inventor score
Filing activity: Jan 15, 1979 → Dec 24, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5988165A | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Performing Operations; Transporting | 131 | Expired |
| US5575348A | Powered wheelchair with adjustable center of gravity and independent suspension | Emerging Cross-Sectional Technologies | 113 | Expired |
| US6554086B1 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 112 | Expired |
| US6302107A | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Performing Operations; Transporting | 107 | Expired |
| US5853059A | Powered wheelchair with adjustable center of gravity and independent suspension | Emerging Cross-Sectional Technologies | 87 | Expired |
| US8172016B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 56 | Active |
| US6935448B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6923280B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 54 | Expired |
| US7219755B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7597163B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 45 | Active |
| US8062003B2 | System and method for providing oxygen | Human Necessities | 42 | Active |
| US6889726B2 | Method and apparatus for filling portable high pressure cylinders with respiratory oxygen | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US5522734A | Apparatus for interconnecting wheelchair batteries | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6357776B1 | Constant center of gravity tiltable chair of a wheelchair | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5971482A | Constant center of gravity tiltable chair of a wheelchair | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4392538A | Adjustable handle assembly for walk-behind garden implement | Emerging Cross-Sectional Technologies | 25 | Expired |
| US8123497B2 | Apparatus for compressing and storing oxygen enriched gas | Performing Operations; Transporting | 23 | Active |
| US8534679B2 | Suspension for wheeled vehicles | Emerging Cross-Sectional Technologies | 22 | Active |
| US7694990B2 | Anti-tip wheelchair | Human Necessities | 21 | Active |
| US9364377B2 | Suspension for wheeled vehicles | Emerging Cross-Sectional Technologies | 19 | Active |
| US8833774B2 | Suspension for wheeled vehicles | Emerging Cross-Sectional Technologies | 19 | Active |
| US6983495B2 | Adjustable height bed | Human Necessities | 17 | Expired |
| US7302716B2 | Adjustable bed | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6997082B2 | Adjustable bed | Emerging Cross-Sectional Technologies | 15 | Expired |
| US9987177B2 | Obstacle traversing wheelchair | Emerging Cross-Sectional Technologies | 15 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.