Face masks
US6851429B2 · kind B2 · utility
92Cited by
11References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2002 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jul 31, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0688
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A face mask is provided in two parts. One part is an adhesive ring that is secured around the nose and mouth of the user. The other part is a transparent canopy with a gas port that is a removable clip fit with the ring. When ventilation is not required, the canopy is removed, leaving the ring in position. The canopy can be clipped back onto the ring when ventilation is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.