Patent US1870616A successfully refreshed from Google Patents.
US4126554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively marked thin-layer chromatographic plate
Assignee: Analtech Inc
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Filing: 1977-09-02
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Granted: 1978-11-21
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Expires: 1997-09-02
Abstract
Abstract A thin-layer chromatographic plate for use with solvents utilizing a substrate having a supporting surface. An adsorbent layer of material is deposited on the supporting surface of the substrate. The adsorbent layer includes a surface separated from the substrate supporting surface which has markings selectively applied to indicate desired positions on the surface of the adsorbent layer.
Inventors
- 👤 Kenneth Rainin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:06
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/90; G01N30/95; G01N30/92
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
94 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate having a supporting surface: b. an adsorbent layer of material deposited on said supporting surface of said substrate said adsorbent layer having a surface spaced from said substrate supporting surface; c. marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking further comprising at least one origin mark for targeting the spotting of the liquid matter.
Claim 2
Dependent Claim
94 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate having a supporting surface: b. an adsorbent layer of material deposited on said supporting surface of said substrate said adsorbent layer having a surface spaced from said substrate supporting surface; c. marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking further comprising at least one origin mark for targeting the spotting of the liquid matter.
Claim 3
Dependent Claim
35 words
The thin-layer chromatographic plate of claim 1 in which said marking is printed on said surface of said adsorbent layer spaced from said substrate in which said marking material is insoluble in the liquid matter.
Claim 4
Dependent Claim
48 words
The thin-layer chromatographic plate of claim 2 in which said at least one origin mark for targeting the spotting of the liquid matter includes a multiplicity of said origin marks, said multiplicity of marks generally aligned away from the center of said spaced surface of said adsorbent layer.
Claim 5
Dependent Claim
26 words
The thin layer chromatographic plate of claim 3 which additionally includes a plurality of distance marks aligned and spaced substantially perpendicularly from said aligned origin marks.
Claim 6
Dependent Claim
97 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate having a supporting surface; b. an adsorbent layer of material deposited on said supporting surface of said substrate, said adsorbent layer having surface spaced from said substrate supporting surface; c. a marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking including at least one distance mark for monitoring the progress of the liquid matter during the chromatographic process.
Claim 7
Dependent Claim
97 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate having a supporting surface; b. an adsorbent layer of material deposited on said supporting surface of said substrate, said adsorbent layer having surface spaced from said substrate supporting surface; c. a marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking including at least one distance mark for monitoring the progress of the liquid matter during the chromatographic process.
Claim 8
Dependent Claim
32 words
The thin layer chromatographic plate of claim 5 in which said at least one distance mark includes a plurality of such marks generally aligned away from said at least one origin mark.
Claim 9
Independent Claim
115 words
A method of producing thin layer chromatographic plates for use with liquid matter comprising the steps of a. providing a substrate having a supporting surface; b. depositing an adsorbent layer of material on said supporting surface of said substrate and providing a surface on said adsorbent layer spaced from said substrate thereby; c. applying at least one marking to said adsorbent layer by placing an amount of material which does not substantially interact with the liquid matter on said adsorbent layer to indicate a selected position on said surface of said adsorbent layer spaced from said substrate supporting surface said marking comprising at least one origin mark for targeting the spotting of the liquid matter.
Claim 10
Independent Claim
115 words
A method of producing thin layer chromatographic plates for use with liquid matter comprising the steps of a. providing a substrate having a supporting surface; b. depositing an adsorbent layer of material on said supporting surface of said substrate and providing a surface on said adsorbent layer spaced from said substrate thereby; c. applying at least one marking to said adsorbent layer by placing an amount of material which does not substantially interact with the liquid matter on said adsorbent layer to indicate a selected position on said surface of said adsorbent layer spaced from said substrate supporting surface said marking comprising at least one origin mark for targeting the spotting of the liquid matter.
Claim 11
Dependent Claim
32 words
The method of claim 7 which additionally includes the step of providing a marking material insoluble in the liquids after said step of applying at least one marking to said adsorbent layer.
Claim 12
Dependent Claim
36 words
The method of claim 8 in which said step of applying at least one marking to said adsorbent layer comprises printing said insoluble marking material upon the surface of said adsorbent layer spaced from said substrate.
Claim 13
Dependent Claim
100 words
A thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate; b. an adsorbent layer of material deposited on said substrate, said adsorbent layer presenting a surface adapted for contact with the liquid matter, said substrate supporting said adsorbent layer; c. marking selectively applied to said adsorbent layer and said substrate, said marking visible when viewed in relation to said contact of said adsorbent surface with the liquid matter, said marking including at least one origin mark adapted for targeting the spotting of the liquid matter said at least one origin mark being applied to said adsorbent layer.
Claim 14
Dependent Claim
100 words
A thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate; b. an adsorbent layer of material deposited on said substrate, said adsorbent layer presenting a surface adapted for contact with the liquid matter, said substrate supporting said adsorbent layer; c. marking selectively applied to said adsorbent layer and said substrate, said marking visible when viewed in relation to said contact of said adsorbent surface with the liquid matter, said marking including at least one origin mark adapted for targeting the spotting of the liquid matter said at least one origin mark being applied to said adsorbent layer.
Claim 15
Dependent Claim
31 words
The thin-layer chromatographic plate of claim 10 in which said marking embraces a plurality of markings and includes at least one distance mark spaced from said at least one origin mark.
Claim 16
Dependent Claim
24 words
The thin-layer chromatographic plate of claim 11 in which said at least one origin mark is composed of marking material insoluble in the liquids.
Claim 17
Dependent Claim
29 words
The thin-layer chromatographic plate of claim 12 in which said at least one origin mark includes a plurality of origin marks aligned on the surface of said adsorbant layer.
Claim 18
Independent Claim
118 words
A method of producing thin-layer chromatographic plates for use with liquid matter comprising the steps of: a. providing a substrate having a supporting surface; b. depositing an adsorbent layer of material on said supporting surface of said substrate and providing a surface on said adsorbent layer spaced from said substrate thereby; c. applying at least one marking to said adsorbent layer by placing an amount of material which does not substantially interact with the liquid matter on said adsorbent layer to indicate a selected position on said surface of said adsorbent layer spaced from said substrate supporting surface, said marking comprising at least one distance mark for monitoring the progress of the liquid matter during the chromatographic process.
Claim 19
Independent Claim
118 words
A method of producing thin-layer chromatographic plates for use with liquid matter comprising the steps of: a. providing a substrate having a supporting surface; b. depositing an adsorbent layer of material on said supporting surface of said substrate and providing a surface on said adsorbent layer spaced from said substrate thereby; c. applying at least one marking to said adsorbent layer by placing an amount of material which does not substantially interact with the liquid matter on said adsorbent layer to indicate a selected position on said surface of said adsorbent layer spaced from said substrate supporting surface, said marking comprising at least one distance mark for monitoring the progress of the liquid matter during the chromatographic process.
Claim 20
Dependent Claim
91 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate b. an adsorbent layer of material deposited on said substrate, said adsorbent layer presenting a surface adapted for contact with the liquid matter, said substrate supporting said adsorbent layer; c. a marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking including at least one identification mark for distinguishing the thin-layer chromatographic plate.
Claim 21
Dependent Claim
91 words
A prepared thin-layer chromatographic plate for use with liquid matter comprising: a. a substrate b. an adsorbent layer of material deposited on said substrate, said adsorbent layer presenting a surface adapted for contact with the liquid matter, said substrate supporting said adsorbent layer; c. a marking applied to said adsorbent layer spaced from said substrate supporting surface, said marking comprising an amount of material which does not substantially interact with the liquid matter in the chromatographic process, said marking including at least one identification mark for distinguishing the thin-layer chromatographic plate.
References Cited (Backward Citations)
US3623602A
Cited
US3864263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |