Filtration mask
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 26, 2013
Grant Date -
Jan 20, 2011
app pub date -
Oct 1, 2008
filing date -
Oct 5, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filtration mask has a collapsible air guide and two filter supports connected at a hinge. The filter supports are movable between a storage position and a deployment position in which the angle between the filter supports being less in the deployment position than in the storage position. In an aspect of this invention, the filter support each have a recess at the hinging edge, and an exhale valve communicating with the air guide is mounted in the recess. In another aspect the exhale valve is connected to the filter supports by a flexible membrane. In a third aspect the air guide is formed by hinged panels.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2008 Application Filing Year
- A62B Class
- 296 Applications Filed
- 194 Patents Issued To-Date
- 65.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 7 Citation Count
- A62B Class
- 4.71 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 26, 2025 |
