EP0162301A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Integral multilayer analytical element
Assignee: Fujifilm Holdings Corp
•
Filing: 1985-04-19
•
Granted: —
•
Expires: 2005-04-19
Abstract
Abstract An integral multilayer analytical element utilizable for determination of an analyte in a liquid sample such as a body fluid which comprises: a porous spreading layer of woven fabric or knitted fabric, which contains a hydrophilic cellulose derivative and a nonionic surfactant having an HLB value of not less than 10, a water-absorbing layer containing a hydrophilic polymer; and a light-transmissive, water-impermeable support. The spreading layer and/or water-absorbing layer may contain a reagent which participates in the detection reaction.
Inventors
- 👤 Fuminori C/O Fuji Photo Film Co.Ltd. Arai
- 👤 Harumi C/O Fuji Photo Film Co.Ltd. Katsuyama
- 👤 Chiaki c/o Fuji Photo Film Co.Ltd. Osada
- 👤 Kenichiro c/o Fuji Photo Film Co:ltd. Yazawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/525
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
An integral multilayer analytical element which comprises: a porous spreading layer of woven fabric or knitted fabric, which contains a hydrophilic cellulose derivative and a nonionic eurfactant having an HLB value of not less than 10, a water-absorbing layer containing a hydrophilic polymer and a light-transmissive, water-impermeable support.
Claim 2
Dependent Claim
48 words
An integral multilayer analytical element which comprises: a porous spreading layer of woven fabric or knitted fabric, which contains a hydrophilic cellulose derivative and a nonionic eurfactant having an HLB value of not less than 10, a water-absorbing layer containing a hydrophilic polymer and a light-transmissive, water-impermeable support.
Claim 3
Dependent Claim
35 words
The integral multilayer analytical element as claimed in claim 1, wherein said porous spreading layer contains at least one reagent which is reactive to an analyte in the liquid sample to show a detectable change.
Claim 4
Dependent Claim
47 words
The integral multilayer analytical element as claimed in claim 2, wherein said absorbing layer contains at least one.reagent which is reactive to a reaction product produced by a reaction between the analyte and the reagent contained in the spreading layer so as to show a detectable change.
Claim 5
Dependent Claim
67 words
An integral multilayer analytical element which comprises: a porous spreading layer of woven fabric or knitted fabric, which contains a hydrophilic cellulose derivative and a nonionic surfactant having an HLB value of not less than 10, a water-absorbing or water-permeable reagent layer containing at least one reagent which is reactive to an analyte in the liquid sample to show a detectable change, and a light-transmissive, water-impermeable support.
Claim 6
Dependent Claim
67 words
An integral multilayer analytical element which comprises: a porous spreading layer of woven fabric or knitted fabric, which contains a hydrophilic cellulose derivative and a nonionic surfactant having an HLB value of not less than 10, a water-absorbing or water-permeable reagent layer containing at least one reagent which is reactive to an analyte in the liquid sample to show a detectable change, and a light-transmissive, water-impermeable support.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.