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US4738773A
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Separator for magnetic particles from liquid phase
Assignee: Bayer AG
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Filing: 1986-05-29
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Granted: 1988-04-19
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Expires: 2006-05-29
Abstract
Abstract A separator for the magnetic removal of magnetizable particles, consists of an application unit for the application and the transport of sample and buffer, a separating unit of plastic or glass for the removal of the magnetizable particles, and a collecting unit. The separating unit is provided with one or more electromagnets, which are able, owing to their magnetic force, to hold the magnetizable particles back in the separating unit.
Inventors
- 👤 Wolfgang Muller-Ruchholtz
- 👤 Jorg Kandzia
- 👤 Wolfgang Haas
- 👤 Gabriele Leyhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:33
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/24; B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; C12M; C12M47/00; C12M47/04; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54313; G01N33/54326; G01N33/551; G01N33/553; G01N35/00; G01N35/0098; Y; Y10; Y10S; Y10S435/00; Y10S435/803
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
107 words
A separator for the magnetic removal of magnetizable particles, comprising: application means for applying and transporting a sample of magnetizable particles in a liquid phase, separating means receptive of the transported sample for removing the magnetizable particles and comprising means forming a free flowing flow path extending downwardly from the application means and including at least one helical separating member in the flow path and at least one electromagnet adjacent said at least one helical separating member with sufficient magnetic force to hold the magnetizable particles back in the separating member and collecting means for receiving the liquid phase of the sample with the magnetizable particles removed.
Claim 2
Dependent Claim
107 words
A separator for the magnetic removal of magnetizable particles, comprising: application means for applying and transporting a sample of magnetizable particles in a liquid phase, separating means receptive of the transported sample for removing the magnetizable particles and comprising means forming a free flowing flow path extending downwardly from the application means and including at least one helical separating member in the flow path and at least one electromagnet adjacent said at least one helical separating member with sufficient magnetic force to hold the magnetizable particles back in the separating member and collecting means for receiving the liquid phase of the sample with the magnetizable particles removed.
Claim 3
Dependent Claim
22 words
The separator according to claim 1, wherein said application means comprises a sample loop, a multiway valve, a pump and a flowmeter.
Claim 4
Dependent Claim
20 words
The separator according to claim 2, wherein the sample loop has a volume of from 1 μl to 1000 ml.
Claim 5
Dependent Claim
22 words
The separator according to claim 1, wherein the separating member consists of one of glass and plastic, with or without a coating.
Claim 6
Dependent Claim
23 words
The separator according to claim 1 wherein the separating member is in the form of one of chambers, pieces of tubing, and tubes.
Claim 7
Dependent Claim
15 words
The separator according to claim 1 wherein said separating means consists of 1-20 separating members.
Claim 8
Dependent Claim
23 words
The separator according to claim 1 wherein each said at least one electromagnet is supplied with current via its own power supply unit.
Claim 9
Dependent Claim
23 words
The separator according to claim 7 wherein each said at least one electromagnet is infinitely variable by means of its power supply unit.
Claim 10
Dependent Claim
14 words
The separator according to claim 1, wherein the collecting means comprises a fraction collector.
Claim 11
Dependent Claim
14 words
Use of the separator according to claim 1 for the removal of magnetic particles.
Claim 12
Dependent Claim
16 words
Process for the removal of magnetic particles, wherein the separator according to claim 1 is used.
Claim 13
Dependent Claim
29 words
The separator according to claim 1, wherein the at least one helical separating member comprises tubing wound in an inwardly extending spiral and thereafter in an outwardly extending spiral.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |