Disposable protective mask
US4643182A · kind A · utility
71Cited by
19References
28Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Apr 20, 1983 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Apr 20, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A protective mask formed from a porous non-woven sheet material which is made of glass fibers and a suitable binding agent, and which may optionally include a gas adsorbent substance. The mask protects the respiratory system of the wearer from the effects of toxic gases and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.