Perry David Lithgow
209Patents
54h-index
66Co-inventors
93Inventor score
Filing activity: Dec 20, 1996 → Jun 29, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7318437B2 | Nasal assembly | Human Necessities | 392 | Expired |
| US6532961B1 | Forehead support for facial mask | Emerging Cross-Sectional Technologies | 386 | Expired |
| US6422238B1 | Headgear | Human Necessities | 358 | Expired |
| US6491034B1 | Gas delivery connection assembly | Emerging Cross-Sectional Technologies | 349 | Expired |
| US7523754B2 | Cushion for a respiratory mask assembly | Emerging Cross-Sectional Technologies | 273 | Active |
| US5896857A | Valve for use in a gas delivery system | Human Necessities | 240 | Expired |
| US6935337B2 | Humidifier with structure to prevent backflow of liquid through the humidifier inlet | Emerging Cross-Sectional Technologies | 198 | Expired |
| US7011090B2 | Elbow for mask assembly | Human Necessities | 198 | Expired |
| US7874293B2 | Nasal assembly | Human Necessities | 187 | Active |
| US8006691B2 | Humidifier with removable water tank | Performing Operations; Transporting | 166 | Active |
| USD493520S1 | Flow generator casing | General | 143 | Expired |
| US7461656B2 | Nasal assembly | Human Necessities | 138 | Active |
| US8186352B2 | Nasal assembly | Human Necessities | 135 | Active |
| USD493884S1 | Flow generator casing with humidifier | General | 128 | Expired |
| US7509958B2 | Headgear assembly for a respiratory mask assembly | Emerging Cross-Sectional Technologies | 127 | Expired |
| US8042546B2 | Nasal assembly | Human Necessities | 127 | Active |
| US6860269B2 | Forehead support for facial mask | Emerging Cross-Sectional Technologies | 125 | Expired |
| USD492992S1 | Portion of mask assembly | General | 125 | Expired |
| US7137388B2 | Air pressure signal monitoring in apparatus for treating sleep disordered breathing | Human Necessities | 123 | Expired |
| USD467335S1 | Air delivery device | General | 119 | Expired |
| US6679261B2 | Forehead support for facial mask | Human Necessities | 116 | Expired |
| US7900635B2 | Nasal assembly | Human Necessities | 115 | Active |
| USD542912S1 | Mask | General | 115 | Expired |
| USD468011S1 | Air delivery device | General | 114 | Expired |
| US7861715B2 | Mask system | Human Necessities | 112 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.