Air filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 8, 2002
Grant Date -
N/A
app pub date -
May 1, 2000
filing date -
Aug 27, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The object of the present invention is to provide an air filter where the lifetime of the air filter is long and a carbon dust can be efficiently caught with keeping the cost low. The air filter of the present invention comprises a first filter layer 11 impregnated with oil; an oil repellent layer 11a disposed in the downstream side of the first filter layer 11, having the property of repelling the oil; and a second filter layer 12 disposed in the downstream side of the oil repellent layer 11a, impregnated with no oil. The transfer of the oil to the second filter layer 12 is controlled by the oil repellent layer 11a.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully