Test paper and porous membrane

Details Test paper and porous membrane Test paper and porous membrane

2010-11-10

2011-10-11

Warden, Jill (Department: 1773)

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

C422S617000, C210S321640, C210S323100, C210S331000, C210S348000, C436S178000, C427S244000, C264S048000

Reexamination Certificate

active

08034301

ABSTRACT:
A test paper includes a porous membrane capable of separating an object that should be filtered out of a sample by filtration, the porous membrane carrying a reagent capable of reacting with a specified component of the sample to result in coloring. The porous membrane includes a first layer having a surface on which the sample is supplied and a second layer having a surface at which sample percolation and measuring are effected, the first layer composed of large pore portions, the surface of the first layer consisting of a smooth surface having open pore portions, the second layer composed of minute pore portions the surface of the second layer consisting of a surface having open pore portions. The porous membrane has a thickness of 50 to 200 μm and a porosity of 60 to 95%.

REFERENCES:
patent: 5968836 (1999-10-01), Matzinger et al.
patent: 0926484 (1999-06-01), None
patent: 11-183474 (1999-07-01), None
patent: 2001-164029 (2001-06-01), None
patent: 2001-164030 (2001-06-01), None
patent: 2001-165930 (2001-06-01), None
patent: 2001-165930 (2001-06-01), None
patent: WO 98/25758 (1998-06-01), None
patent: WO 9825758 (1998-06-01), None

Affiliated with

Also associated with

Rating

Test paper and porous 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 Test paper and porous membrane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test paper and porous membrane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4273117