Elfed I. Williams
11Patents
10h-index
12Co-inventors
65Inventor score
Filing activity: Mar 8, 1996 → Jul 20, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5724677A | Multi-part headband and respirator mask assembly and process for making same | Human Necessities | 97 | Expired |
| US6148817A | Multi-part headband and respirator mask assembly and process for making same | Human Necessities | 63 | Expired |
| US6125849A | Respiratory masks having valves and other components attached to the mask by a printed patch of adhesive | Human Necessities | 55 | Expired |
| US6070579A | Elastomeric composite headband | Human Necessities | 41 | Expired |
| US6874499B2 | Filter element that has a thermo-formed housing around filter material | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6286144A | Protective garments incorporating bands of welded or adhesively-bonded elastomeric material | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7007695B2 | Manner of attaching component elements to filtration material such as may be utilized in respiratory masks | Performing Operations; Transporting | 21 | Expired |
| US7069931B2 | Method of making a filtering face mask that has an exhalation valve attached thereto | Performing Operations; Transporting | 19 | Expired |
| US6604524B1 | Manner of attaching component elements to filtration material such as may be utilized in respiratory masks | Performing Operations; Transporting | 17 | Expired |
| US6959709B2 | Manner of attaching component elements to filtration material such as may be utilized in respiratory masks | Performing Operations; Transporting | 16 | Expired |
| US7497217B2 | Method of making a filter cartridge using a thermoforming step | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.