Mask
US7047970B2 · kind B2 · utility
11Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2001 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0625
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heat generating unit is incorporated in a mask in order to actively supply warm steam, and also drug vapor, to the nose and throat, and moisturize the upper respiratory tract. It is preferable that a metal powder, salt, and water be contained in the heat generating unit, and that an exothermic composition that releases steam in conjunction with the oxidation reaction of the metal powder be used therein. It is preferable that either an inhalation valve or exhalation valve be provided in the main mask body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.