Air filter material

Stock material or miscellaneous articles – Structurally defined web or sheet – Weight per unit area specified

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C428S220000, C442S387000, C442S388000, C442S402000, C055S527000, C055S528000

Reexamination Certificate

active

07968176

ABSTRACT:
An air filter material includes a laminate of an air inlet layer and an air outlet layer, and has a mean flow pore size of 20 μm to 40 μm, a minimum pore size of 2.4 μm to 3.8 μm, and a maximum pore size of 80 μm or less. The air inlet layer is a needle punched nonwoven fabric layer having an areal fiber weight of 55 g/m2to 100 g/m2. The air outlet layer is a laminated spunlace nonwoven fabric made by laminating at least two or more spunlace nonwoven fabric layers having an areal fiber weight of 20 g/m2to 60 g/m2, a mean flow pore size of 50 μm to 90 μm, a minimum pore size of 3.0 μm to 10.0 μm, and a maximum pore size of 180 μm or less.

REFERENCES:
patent: 5198294 (1993-03-01), Masuda et al.
patent: 6746517 (2004-06-01), Benson et al.
patent: 2003/0046913 (2003-03-01), Suzuki et al.
patent: 2003/0222014 (2003-12-01), Nakajima
patent: 2004/0083697 (2004-05-01), Niakin
patent: 2 379 499 (2001-11-01), None
patent: 1463785 (2003-12-01), None
patent: 101 92 116 (2002-10-01), None
patent: 1 378 283 (2004-01-01), None
patent: 2 368 298 (2002-05-01), None
patent: A 62-279817 (1987-12-01), None
patent: A 4-27403 (1992-01-01), None
patent: A 4-27404 (1992-01-01), None
patent: A 4-193316 (1992-07-01), None
patent: A 5-49825 (1993-03-01), None
patent: A 8-24535 (1996-01-01), None
patent: A 8-192016 (1996-07-01), None
patent: A 10-337426 (1998-12-01), None
patent: A 2002-15624 (2002-01-01), None
patent: A 2002-45624 (2002-02-01), None
patent: A 2003-340220 (2003-12-01), None
patent: A 2004-243250 (2004-09-01), None
patent: WO 01/89662 (2001-11-01), None
“Japanese Industrial Standard: Test Methods of Air Cleaners for Automobiles,” JIS D 1612,Japanese Standards Association, pp. 21-45, 1989.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Air filter material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air filter material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air filter material will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2663409

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.