Vaughn B. Grannis
16Patents
13h-index
13Co-inventors
71Inventor score
Filing activity: Dec 23, 1987 → Apr 18, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5924420A | Full face respirator mask having integral connectors disposed in lens area | Human Necessities | 137 | Expired |
| USD378610S | Full face respirator | General | 123 | Expired |
| US5325892A | Unidirectional fluid valve | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6216693A | Respirator having a compressible press fir filter element | Human Necessities | 65 | Expired |
| US5509436A | Unidirectional fluid valve | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6843248B2 | Filtering face mask that has a new exhalation valve | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7117868B1 | Fibrous filtration face mask having a new unidirectional fluid valve | Human Necessities | 44 | Expired |
| US6854463B2 | Filtering face mask that has a new exhalation valve | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4997034A | Heat exchanger | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US7311104B2 | Method of making a filtering face mask that has an exhalation valve | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7428903B1 | Fibrous filtration face mask having a new unidirectional fluid valve | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7493900B1 | Fibrous filtration face mask having a new unidirectional fluid valve | Emerging Cross-Sectional Technologies | 19 | Expired |
| USD426298S | Full-face respirator lens | General | 15 | Expired |
| USD379160S | Buckle | General | 10 | Expired |
| USD388872S | Full face respirator lens | General | 10 | Expired |
| USD409744S | Full face respirator lens | General | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.