Support substrate for separation membrane

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including strand or fiber material which is of specific...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C442S340000, C442S415000, C442S381000, C442S382000, C442S392000, C264S175000, C264S165000

Reexamination Certificate

active

08034729

ABSTRACT:
A separation membrane support substrate characterized by being composed of a laminated nonwoven fabric comprising a front layer as the resin coating layer, a middle layer and a back layer which are integrally formed by heat bonding, and by satisfying the following conditions (1) to (5): (1) The front layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-30 μm; (2) the middle layer has at least one layer comprising melt blown fibers with a single fiber diameter of no greater than 5 μm, and a fiber basis weight of at least 1 g/m2and comprising no more than 30 wt % of the total fiber basis weight; (3) the back layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-20 μm, and has a fiber basis weight of 3-40 g/m2; (4) the laminated nonwoven fabric has an apparent density of 0.67-0.91 g/cm3; and (5) the laminated nonwoven fabric has a thickness of 45-110 μm.

REFERENCES:
patent: 7441667 (2008-10-01), Galvin et al.
patent: 2006/0292954 (2006-12-01), Suzuka et al.
patent: 2007/0138084 (2007-06-01), Galvin et al.
patent: 0 557 659 (1993-09-01), None
patent: 2-289161 (1990-11-01), None
patent: 04-136249 (1992-05-01), None
patent: 5-179558 (1993-07-01), None
patent: 2952335 (1999-09-01), None
patent: 2004-243220 (2004-09-01), None
patent: WO 2004/094136 (2004-11-01), None
Supplementary European Search Report dated Jul. 2, 2008.
Office Action for Related Application No. JP 2006-548979 dated Jan. 12, 2010.

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

Support substrate for separation membrane does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Support substrate for separation membrane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Support substrate for separation membrane will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4269616

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