EP0119622A2
Expired / Lapsed
EP
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Integral element for biological reaction and process for the preparation thereof
Assignee: Fujifilm Holdings Corp
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Filing: 1984-03-19
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Granted: —
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Expires: 2004-03-19
Abstract
Abstract An integral element for biological reaction comprising at least two layers consisting essentially of: a composite porous biological reaction layer comprising a fibrous material and a particulate material to which an active substance capable of participating in a biochemical reaction is fixed, and a porous layer of a fibrous material, in which: (1) the weight ratio between the particulate material and the fibrous material ranges from 1 : 20 to 1 : 0.3 on dry basis; and (2) the particulate material is contained in an amount ranging from 1 to 60 g/m 2 .
Inventors
- 👤 Yukio Yasuda
- 👤 Nobuhito Masuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/74; G01N33/78; G01N33/52; G01N33/525; G01N33/53; G01N33/543; G01N33/54366; G01N33/54386; G01N33/54387; G01N33/54391; Y; Y10; Y10S; Y10S435/00; Y10S435/805; Y10S436/00; Y10S436/807; Y10S436/81
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
An integral element for biological reaction comprising at least two layers consisting essentially of: a composite porous biological reaction layer comprising a fibrous material and a particulate material to which an active substance capable of participating in a biochemical reaction is fixed, and a porous layer of a fibrous material, in which: (1) the weight ratio between the particulate material and the fibrous material ranges from 1 : 20 to 1 : 0.3 on dry basis; and (2) the particulate material is contained in an amount ranging from 1 to 60 g/m 2.
Claim 2
Dependent Claim
93 words
An integral element for biological reaction comprising at least two layers consisting essentially of: a composite porous biological reaction layer comprising a fibrous material and a particulate material to which an active substance capable of participating in a biochemical reaction is fixed, and a porous layer of a fibrous material, in which: (1) the weight ratio between the particulate material and the fibrous material ranges from 1 : 20 to 1 : 0.3 on dry basis; and (2) the particulate material is contained in an amount ranging from 1 to 60 g/m 2.
Claim 3
Dependent Claim
22 words
The element for biological reaction as claimed in claim 1, in which the latter porous layer contains a particulate material dispersed therein.
Claim 4
Dependent Claim
30 words
The element for biological reaction as claimed in claim 1 or 2, in which fibers of said fibrous materials tangle with each other on the interface between the porous layers.
Claim 5
Dependent Claim
39 words
The element for biological reaction as claimed in claim 1 or 2, in which said particulate material is in the form of sticks having a ratio between thickness and length ranging from 1 : 1 to 1 : 20.
Claim 6
Dependent Claim
27 words
The element for biological reaction as claimed in claim 1 or 2, in which the particle size of said particulate material ranges from 10 to 200 µm.
Claim 7
Dependent Claim
35 words
The element for biological reaction as claimed in claim 1 or 2, in which fibers of said fibrous material have thickness ranging from 0.1 to 5 µm and length ranging from 100 to 4,000 µm.
Claim 8
Dependent Claim
25 words
The element for biological reaction as claimed in claim 1 or 2, in which the thickness of said element ranges from 100 to 2000 Um.
Claim 9
Dependent Claim
81 words
A process for the preparation of an integral element for biological reaction which comprises: processing one composition which comprises a particulate material having an active substance capable of participating in a biochemical reaction fixed thereto and a fibrous material and another composition which comprises a fibrous material, both being placed in contact with each other, under such condition that at least one composition is in a slurry state, resulting in formation of an integral structure; and drying the integrally formed structure.
Claim 10
Dependent Claim
81 words
A process for the preparation of an integral element for biological reaction which comprises: processing one composition which comprises a particulate material having an active substance capable of participating in a biochemical reaction fixed thereto and a fibrous material and another composition which comprises a fibrous material, both being placed in contact with each other, under such condition that at least one composition is in a slurry state, resulting in formation of an integral structure; and drying the integrally formed structure.
Claim 11
Dependent Claim
29 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8, in which said composition contining fibrous material further contains a particulate material.
Claim 12
Dependent Claim
62 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8 or 9, in which: the weight ratio between the particulate material and the fibrous material ranges from 1 : 20 to 1 : 0.3 on dry basis; and the particulate material is contained in an amount ranging from 1 to 60 g/ m 2 .
Claim 13
Dependent Claim
56 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8 or 9, in which said formation of the integral structure is performed under such condition that at least one composition is processed in a substantially completely dispersed state and the other composition has a matrix in a re-wetted state.
Claim 14
Dependent Claim
45 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8 or 9, in which the thickness of the element is defined by means of one or more members having a predetermined clearance in advance or after the drying.
Claim 15
Dependent Claim
28 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8 or 9, in which the drying procedure is performed through freeze-drying.
Claim 16
Dependent Claim
32 words
The process for the preparation of an integral element for biological reaction as claimed in claim 8 or 9, in which the thickness of the element ranges from 100 to 2,000 um.
References Cited (Backward Citations)
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