Integral multilayer analytical element

Details Integral multilayer analytical element Integral multilayer analytical element

Filed on

1990-02-20

Date issued

1991-05-28

Examiner

Johnston, Jill

Patent Class

Chemical apparatus and process disinfecting, deodorizing, preser

SubClass

Analyzer, structured indicator, or manipulative laboratory...

SubSubClass

Calorimeter

Other Related Categories

422 57, 422 58, 435805, 436170, G01N 3122

Type

Patent

Status

active

Patent number

050193473

Description

ABSTRACT:
In an integral multilayer analytical element of a flat sheet type comprising a plurality of layers for quantitative analysis of an analyte in a liquid sample, the improvement which comprises at least two layers of a microporous sheet material arranged adjacent to each other, said at least two layers being combined by an adhesive provided in part on the interface of said layers, whereby the interface allows essentially uniform passage of a liquid therethrough.

REFERENCES:
patent: 127591 (1887-12-01), Nagatomo et al.
patent: 3802842 (1974-04-01), Lange et al.
patent: 3992158 (1976-11-01), Przybylowicz et al.
patent: 4089747 (1978-05-01), Bruschi et al.
patent: 4132528 (1979-01-01), Eikenberry et al.
patent: 4144306 (1979-03-01), Figueras
patent: 4292272 (1981-09-01), Kitajima et al.
patent: 4337222 (1982-06-01), Kitajima et al.
patent: 4435362 (1984-03-01), Katsuyama et al.
Hiratsuka, et al. Chemical Abstracts, vol. 104, Abstract No. 104:84912a, 1986 (which is based on an EPA published 1/2/86).

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