Patent US458155A successfully refreshed from Google Patents.
Patent US4828801A successfully refreshed from Google Patents.
US4828801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detecting on a nitrocellulose sheet the presence of macromolecular complexes, such as antigens/antibodies
Assignee: Centre National de la Recherche Scientifique
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Filing: 1986-06-27
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Granted: 1989-05-09
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Expires: 2006-06-27
Abstract
Abstract This invention relates to a device for detecting on a nitrocellulose-type sheet the presence of macro-molecular complexes, having: a bottom adapted to receive said nitrocellulose sheet, a plate adapted to rest on said nitrocellulose sheet applied on the bottom and having a plurality of parallel grooves that pass through said plate over the whole of its thickness and over the whole length of said grooves.
Inventors
- 👤 Monique Lombardy wife Alric
- 👤 Michel Renaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:33
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/544; G01N33/548; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/809
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
A device for detecting the presence of macromolecular complexes on a nitro-cellulose sheet, comprising: a bottom member having the form of a box in which is formed a compartment adapted to receive a nitrocellulose sheet; a plate adapted to rest on a surface of a nitrocellulose sheet opposite another surface of the nitrocellulose sheet in contact with said compartment of said bottom member, said plate comprising a plurality of parallel grooves directed to said sheet, said grooves being open over a whole thickness of said plate and over the whole length of said grooves; a lid which covers at least the free openings of the grooves opposite to a nitrocellulose sheet; and means for clamping tightly together said bottom member, a nitrocellulose sheet and, said plate, further comprising a sole adapted to be interposed between the bottom of said compartment and a nitrocellulose sheet, the surface of said sole which is directed towards said bottom presenting protuberances whose height decreases from the center towards the edge.
Claim 2
Independent Claim
166 words
A device for detecting the presence of macromolecular complexes on a nitro-cellulose sheet, comprising: a bottom member having the form of a box in which is formed a compartment adapted to receive a nitrocellulose sheet; a plate adapted to rest on a surface of a nitrocellulose sheet opposite another surface of the nitrocellulose sheet in contact with said compartment of said bottom member, said plate comprising a plurality of parallel grooves directed to said sheet, said grooves being open over a whole thickness of said plate and over the whole length of said grooves; a lid which covers at least the free openings of the grooves opposite to a nitrocellulose sheet; and means for clamping tightly together said bottom member, a nitrocellulose sheet and, said plate, further comprising a sole adapted to be interposed between the bottom of said compartment and a nitrocellulose sheet, the surface of said sole which is directed towards said bottom presenting protuberances whose height decreases from the center towards the edge.
Claim 3
Dependent Claim
20 words
The device of claim 1, wherein the parallel open grooves of the said plate are discontinuous but of equal length.
Claim 4
Dependent Claim
124 words
The device of claim 1 wherein said box comprises: a first part which comprises said compartment having an interposed sole adapted to be housed between the bottom of said compartment and a nitrocellulose sheet, such that the surface directed towards said bottom of said compartment presents protuberances whose height decreases from the centre towards the edge, and the opposite surface receives a seal on which is applied said nitrocellulose sheet, and on which is in turn applied said plate comprising a plurality of parallel grooves, a second part, contiguous to the first, which receives a closure member comprising an asymmetrical rotatable maneuvering knob whose periphery forms a cam and abuts on the edge of the grooved plate to block the latter in the compartment.
Claim 5
Dependent Claim
46 words
The device of claim 3, wherein two opposite edges of the grooved plate comprise inclined planes, one of these inclined planes cooperating with a tongue forming stop, fast with the base, the other, opposite inclined plane cooperating with the inclined periphery of the rotatable maneuvering knob.
Claim 6
Dependent Claim
67 words
The device of claim 1, further comprising a second plate having a plurality of parallel grooves open over the whole thickness of said second plate and over the whole length of said grooves, said second plate adapted to be crossed with said first plate such that the direction of said grooves of said second plate is perpendicular to the direction of said grooves of said first plate.
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) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |