US4783315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analysis material sheet
Assignee: Fujifilm Holdings Corp
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Filing: 1985-07-23
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Granted: 1988-11-08
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Expires: 2005-07-23
Abstract
Abstract An analysis material sheet is disclosed which is comprised of layers of material with strong adhesion for one another. The sheet includes a water-impermeable support having provided directly or indirectly thereon a layer of fabric. The fabric contains a hydrophobic organic polymer fiber and is physically activated on at least one surface thereof, with the physically activated surface being adhered directly or indirectly to the support. A reagent layer can be provided directly or indirectly on the liquid sample-spreading layer of fabric. By utilizing a fabric containing a hydrophobic organic polymer fiber, body fluids to be analyzed can be quickly and uniformly spread and by utilizing the physically activated surface of the fabric, strong adhesion between the layers can be obtained.
Inventors
- 👤 Fuminori Arai
- 👤 Kenichiro Yazawa
- 👤 Hideaki Takeuchi
- 👤 Masao Kitajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:06
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/525; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/3175
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
105 words
An analysis material sheet, comprising: a water-impermeable support; and a fabric layer comprising a fabric including about 10% or more of a polyethyleneterephthalate synthetic hydrophobic organic polymer fiber and the remainder being natural fiber provided on said support, said fabric layer containing a reagent and being physically activated on at least one surface thereof to render the fabric layer hydrophilic and provide increased adhesiveness, with said physically activated surface being adhered to said support to form an integral structure, wherein said physical activation is conducted by a treatment selected from the group consisting of a glow discharge treatment, plasma discharge and a corona discharge treatment.
Claim 2
Dependent Claim
105 words
An analysis material sheet, comprising: a water-impermeable support; and a fabric layer comprising a fabric including about 10% or more of a polyethyleneterephthalate synthetic hydrophobic organic polymer fiber and the remainder being natural fiber provided on said support, said fabric layer containing a reagent and being physically activated on at least one surface thereof to render the fabric layer hydrophilic and provide increased adhesiveness, with said physically activated surface being adhered to said support to form an integral structure, wherein said physical activation is conducted by a treatment selected from the group consisting of a glow discharge treatment, plasma discharge and a corona discharge treatment.
Claim 3
Dependent Claim
22 words
An analysis material sheet as claimed in claim 1, wherein an adhesive layer is provided between said support and said fabric layer.
Claim 4
Dependent Claim
24 words
An analysis material sheet as claimed in claim 1, wherein said fabric layer comprises about 30% or more of said hydrophobic organic polymer fiber.
Claim 5
Dependent Claim
28 words
An analysis material sheet as claimed in claim 1, wherein said natural fiber is fiber selected from the group consisting of cotton, kopak, flax, hemp, ramie and silk.
Claim 6
Dependent Claim
21 words
An analysis material sheet as claimed in claim 1, wherein the fabric layer comprises 100% of said hydrophobic organic polymer fiber.
Claim 7
Dependent Claim
16 words
An analysis material sheet as claimed in claim 1, wherein said fabric layer comprises mixed yarns.
Claim 8
Dependent Claim
109 words
An analysis material sheet, comprising: a reagent layer containing a reagent and having provided thereon a liquid sample-spreading layer of fabric, said fabric layer comprising a fabric including about 10% or more of a polyethyleneterephthalate synthetic hydrophobic organic polymer fiber and the remainder being natural fiber, and being physically activated on at least one surface thereof to render the fabric layer hydrophilic and provide increased adhesiveness, with said physically activated surface being adhered to said reagent layer to form an integral structure, wherein said physical activation is conducted by a treatment selected from the group consisting of a glow discharge treatment, plasma discharge treatment and a corona discharge treatment.
Claim 9
Dependent Claim
109 words
An analysis material sheet, comprising: a reagent layer containing a reagent and having provided thereon a liquid sample-spreading layer of fabric, said fabric layer comprising a fabric including about 10% or more of a polyethyleneterephthalate synthetic hydrophobic organic polymer fiber and the remainder being natural fiber, and being physically activated on at least one surface thereof to render the fabric layer hydrophilic and provide increased adhesiveness, with said physically activated surface being adhered to said reagent layer to form an integral structure, wherein said physical activation is conducted by a treatment selected from the group consisting of a glow discharge treatment, plasma discharge treatment and a corona discharge treatment.
Claim 10
Dependent Claim
23 words
An analysis material sheet as claimed in claim 7, wherein an adhesive layer is provided between said reagent layer and said fabric layer.
Claim 11
Dependent Claim
24 words
An analysis material sheet as claimed in claim 7, wherein said fabric layer comprises about 30% or more of said hydrophobic organic polymer fiber.
Claim 12
Dependent Claim
28 words
An analysis material sheet as claimed in claim 7, wherein said natural fiber is fiber selected from the group consisting of cotton, kopak, flax, hemp, ramie and silk.
Claim 13
Dependent Claim
21 words
An analysis material sheet as claimed in claim 7, wherein the fabric layer comprises 100% of said hydrophobic organic polymer fiber.
Claim 14
Dependent Claim
16 words
An analysis material sheet as claimed in claim 7, wherein said fabric layer comprises mixed yarns.
Claim 15
Dependent Claim
20 words
An analysis material sheet as claimed in claim 1, wherein said fabric layer is provided directly on said water-impermeable support.
Claim 16
Dependent Claim
23 words
An analysis material sheet as claimed in any of claims 1 or 13, wherein said fabric layer is physically activated on both surfaces.
Claim 17
Dependent Claim
21 words
An analysis material sheet as claimed in claim 7, wherein said reagent layer is provided directly on said layer of fabric.
Claim 18
Dependent Claim
24 words
An analysis material sheet as claimed in any of claims 7 or 15, wherein said layer of fabric is physically activated on both surfaces.
Claim 19
Dependent Claim
33 words
An analysis material sheet as claimed in any of claims 1 or 15, wherein said reagent layer is water-permeable and has a transparent, water-impermeable support provided on a side opposite said spreading layer.
Claim 20
Dependent Claim
22 words
An analysis material sheet as claimed in any of claims 1 or 7, wherein the physical activation is a plasma discharge treatment.
Claim 21
Dependent Claim
22 words
An analysis material sheet as claimed in any of claims 1 or 5, wherein the physical activation is a corona discharge treatment.
Claim 22
Dependent Claim
22 words
An analysis material sheet as claimed in any of claims 1 or 7, wherein the physical activation is a glow discharge treatment.
Claim 23
Dependent Claim
23 words
An analysis material as claimed in claim 20, wherein the synthetic hydrophobic organic polymer fiber comprises 30% or more of the fabric layer.
Claim 24
Dependent Claim
22 words
An analysis material sheet as claimed in claim 21, wherein the synthetic hydrophobic organic polymer fiber comprises 100% of the fabric layer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-08 | 1992-05-09 | 1992-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-08 | 1996-05-09 | 1996-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-08 | 2000-05-09 | 2000-11-08 | $7700.00 | Window Closed / Lapsed |