Facemasks containing an anti-fog / anti-glare composition
US7703456B2 · kind B2 · utility
20Cited by
165References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2003 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Jan 17, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2401/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A coating composition that is incorporated into a facemask to reduce fogging and glare is provided. For example, in one embodiment, the facemask contains a shield or visor formed from a transparent substrate having at least one surface applied with the coating composition of the present invention. The present inventors have unexpectedly discovered that one or more water-soluble organic polymers, such as ethyl hydroxyethylcellulose, may be utilized as a principal component of the coating composition to reduce fogging and glare in a simple, yet effective manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.