Patent US4840730A successfully refreshed from Google Patents.
US4840730A
Expired / Lapsed
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Chromatography system using horizontal flow columns
Assignee: Sepragen Corp
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Filing: 1988-06-09
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Granted: 1989-06-20
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Expires: 2008-06-09
Abstract
Abstract A system for chromatography using horizontal (radial) flow columns is disclosed. The system provides rapid separation of complex biological or organic mixtures at low operating pressures. The system may be used in a variety of applications, such as in the analysis of the constituents of a mixture, or in large pilot or plant scale operations where the isolation of one or more purified components of a mixture or fluid is required for further testing or for commercial purposes. The system is designed to accommodate separation via a variety of routes including ion-exchange, affinity, hydrophobic, chiral, hydroxylapatite, reverse phased as well as rapid desalting techniques.
Inventors
- 👤 Vinit Saxena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:58
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/88; B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1807; B01D15/1864; B01D15/1871; B01D15/1885; G01N30/26; G01N30/38; G01N2030/386; G01N2030/8886; G01N30/46; G01N30/461; G01N30/466; G01N30/60; G01N30/6047
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
168 words
A low pressure chromatography system using at least one horizontal column, said system comprising: at least one chromatographic column having a bed of separation medium located intermediate an inlet channel and an outlet channel said inlet and outlet channels being coaxially positioned with respect to each other, said column being constructed such that sample fluid passes through said bed in a horizontal direction from said inlet channel to said outlet channel, means for directing sample fluid to said column including pump means having an outlet connected via a first fluid line to an inlet of said column, said inlet being in fluid communication with said inlet channel, and valve means mounted in said first fluid line for controlling passage of fluid therethrough, detection means connected to said column for detecting sample fluid fractions discharged from said outlet channel of said column, and means for controlling at least sample fluid directed into said inlet of said column and sample fluid fractions discharged from said outlet channel of said column.
Claim 2
Dependent Claim
168 words
A low pressure chromatography system using at least one horizontal column, said system comprising: at least one chromatographic column having a bed of separation medium located intermediate an inlet channel and an outlet channel said inlet and outlet channels being coaxially positioned with respect to each other, said column being constructed such that sample fluid passes through said bed in a horizontal direction from said inlet channel to said outlet channel, means for directing sample fluid to said column including pump means having an outlet connected via a first fluid line to an inlet of said column, said inlet being in fluid communication with said inlet channel, and valve means mounted in said first fluid line for controlling passage of fluid therethrough, detection means connected to said column for detecting sample fluid fractions discharged from said outlet channel of said column, and means for controlling at least sample fluid directed into said inlet of said column and sample fluid fractions discharged from said outlet channel of said column.
Claim 3
Dependent Claim
29 words
The system of claim 1, additionally including fraction collector means connected to said detector means for collection of fractions of sample fluid discharged from said outlet of said column.
Claim 4
Dependent Claim
110 words
The system of claim 2, additionally including a second chromatography column constructed as said first-mentioned column, inlet fluid lines connecting said sample fluid directing means to each of said columns, outlet fluid lines connecting each of said columns to said detection means and/or said fraction collector means, an interconnecting fluid line connected at one end to said inlet fluid lines intermediate said columns and at an opposite end to said outlet fluid lines intermediate said columns, and valve means located in said inlet fluid lines, said outlet fluid lines and said interconnecting fluid line, such that sample fluid can be directed into said columns in series or in parallel relation.
Claim 5
Dependent Claim
44 words
The system of claim 1 or 2, additionally including means for measuring pressure and means for measuring flow of sample fluid into said inlet of said column, each of said means being operatively connected to said system intermediate said pump means and said column.
Claim 6
Dependent Claim
18 words
The system of claim 4, additionally including a data acquisition system operatively connected to at least said detector.
Claim 7
Dependent Claim
21 words
The system of claim 5, additionally including a process controller/gradient programmer operatively connected to at least said sample fluid directing means.
Claim 8
Dependent Claim
29 words
The system of claim 6, wherein said process controller/gradient programmer is additionally operatively connected to said means for measuring flow and pressure of sample fluid directed into said column.
Claim 9
Dependent Claim
25 words
The system of claim 1 or 2, wherein said pump means has an inlet adapted to be connected to at least a sample fluid source.
Claim 10
Dependent Claim
40 words
The system of claim 8, wherein said inlet of said pump means is connected to said sample fluid source and to at least one buffer material source, and additionally including valves for controlling flow of sample fluid and buffer material.
Claim 11
Dependent Claim
99 words
The system of claim 8, wherein said inlet of said pump means is connected to a second fluid line, said second fluid line is connected to said source of sample fluid, said second fluid line being also connected to a plurality of fluid lines connected to a plurality of different buffer material sources, a valve means connected so as to control flow of sample material into second said fluid line, and a plurality of individual valve means connected in said plurality of fluid lines so as to control flow of the different buffer materials in said second fluid line.
Claim 12
Dependent Claim
45 words
The system of claim 9, additionally including another fluid line interconnecting said fraction collector means with said second fluid line, and valve means connected to said another fluid line so as to control flow of fluid from said fraction collector means to said pump means.
Claim 13
Dependent Claim
41 words
The system of claim 1 or 2, wherein said column is additionally provided with means by which separation medium may be directed thereinto to form said bed, and means by which air may be discharged therefrom for preventing void volume therein.
Claim 14
Dependent Claim
61 words
The system of claim 1 or 2, wherein said sample fluid directing means includes: a valve located in a first fluid line positioned intermediate said column and a fluid mixer, an injector means for directing a sample fluid to said valve, a plurality of pumps connected to said fluid mixer, and means for directing buffer material to said plurality of pumps.
Claim 15
Dependent Claim
52 words
The system of claim 13, additionally including a second fluid line having one end connected to said first fluid line intermediate said column and said valve, with an opposite end connected intermediate said valve and said injector means, said injector means being adapted to be connected to a source of sample fluid.
Claim 16
Dependent Claim
104 words
The system of claim 13, wherein said plurality of pumps is connected to an inlet of said fluid mixer in parallel relation, and wherein said means for directing buffer material to said plurality of pumps comprises: a pair of fluid lines each connected at one end to an inlet of an associated pump with an opposite end adapted to be connected to a source of buffer material, an interconnecting fluid line connecting said pair of lines, a valve located in each of said pair of fluid lines upstream of said interconnecting fluid line and at least one valve located in said interconnecting fluid line.
Claim 17
Dependent Claim
63 words
The system of claim 15, wherein said interconnecting fluid line is provided with a pair of spaced apart valves, and additionally including a recycle fluid line having one end interconnecting said detector means and said fraction collector means with an opposite end connected to said interconnecting fluid line intermediate said pair of spaced valves, and a valve located in said recycle fluid line.
Claim 18
Dependent Claim
22 words
The system of claim 13, additionally including a process controller/gradient programmer operationally connected to said valve and to said plurality of pumps.
Claim 19
Dependent Claim
47 words
The system of claim 17, additionally including a flow measuring device and a pressure measuring device, each connected to said first fluid line intermediate said valve and said column, and wherein said process controller/gradient programmer is operationally connected to each of said flow and pressure measuring devices.
Claim 20
Dependent Claim
18 words
The system of claim 17, additionally including a data acquisition system operatively connected to at least said detector.
Claim 21
Dependent Claim
81 words
The system of claim 1 or 2, additionally including a support mechanism for said chromatography column, said support mechanism comprising: a bottom plate, a top plate, a pair of upright support members located intermediate and secured to said bottom plate and said top plate, and a pair of retainer plates positioned intermediate said bottom plate and said top plate and adjustably mounted to said pair of support members, said column being positioned between and retained by said pair of retainer plates.
Claim 22
Dependent Claim
51 words
The system of claim 20, wherein said pair of retainer plates each includes an opening therein and a groove spaced from said opening, said opening being constructed to allow fittings on said column to extend through said retainer plates, said grooves being constructed to receive protruding retainer members of said column.
Claim 23
Dependent Claim
65 words
The system of claim 20, wherein said pair of support members are provided with threads along at least sections thereof, and additionally including a plurality of locking nuts on said threaded sections of said support members, said locking nuts functioning to retain at least said pair of retainer plates in fixed relation to said support members wherein said column is positioned between said retainer plates.
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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) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |