US4238327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resonance chromatography
Assignee: Individual
•
Filing: 1979-06-25
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Granted: 1980-12-09
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Expires: 1999-06-25
Abstract
Abstract A process and apparatus for enhancing the separation of molecules, such as cells or proteins, into distinct propulations based on their interactions with an externally imposed varying electric field during liquid gel chromatography (LGC). An electric field, at radio frequency (RF), is created between two plates of a capacitor structure and impressed through the gel media column situated between the plates. The varying field interacts with the molecules through polarization events that alter the molecular vibration and rotation motions. The induced changes cause the molecules to exhibit elution characteristics distinct from those normally obtained during LGC. Thereby, molecules can be further and more selectively partitioned according to their distinct polarization properties.
Inventors
- 👤 Robert P. Liburdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:07
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/281; B01J20/291; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/20; B01D15/26; B01D15/34; B01D15/38; B01D15/3861; B01D15/3885; G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6047; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
A method for enhancing the partitioning of molecules having net dipole moments or distributed dipoles within their molecular chains using liquid gel chromatography, which comprises the application of a time-varying electric field through the gel media to alter the apparent molecular size.
Claim 2
Independent Claim
42 words
A method for enhancing the partitioning of molecules having net dipole moments or distributed dipoles within their molecular chains using liquid gel chromatography, which comprises the application of a time-varying electric field through the gel media to alter the apparent molecular size.
Claim 3
Dependent Claim
32 words
The method according to claim 1, wherein the varying electric field is applied through the gel media in a direction substantially transverse to the overall direction of molecular flow through the media.
Claim 4
Dependent Claim
24 words
The method according to claim 1, wherein the electric field varies at a frequency related to the relaxation time of the molecules being partitioned.
Claim 5
Independent Claim
46 words
A method for inducing new vibration and rotation modes in molecules having net dipole moments or distributed dipoles within their molecular chains to alter their apparent physical and chemical properties for partitioning purposes, comprising the impression of a time-varying electric field through said molecules during partitioning.
Claim 6
Independent Claim
46 words
A method for inducing new vibration and rotation modes in molecules having net dipole moments or distributed dipoles within their molecular chains to alter their apparent physical and chemical properties for partitioning purposes, comprising the impression of a time-varying electric field through said molecules during partitioning.
Claim 7
Dependent Claim
30 words
The method as described in claim 4, wherein said molecules are cells or proteins and said electric field varies at a rate close to the resonant frequency of the molecules.
Claim 8
Dependent Claim
39 words
In a liquid gel chromatography apparatus having a gel media for partitioning molecules with net dipole moments or distributed dipoles within their molecular chains, an improvement, comprising a means for creating a time-varying electric field through said gel media.
Claim 9
Dependent Claim
39 words
In a liquid gel chromatography apparatus having a gel media for partitioning molecules with net dipole moments or distributed dipoles within their molecular chains, an improvement, comprising a means for creating a time-varying electric field through said gel media.
Claim 10
Dependent Claim
23 words
The improvement as recited in claim 6, wherein said electric field varies at a rate close to the resonant frequency of the molecules.
Claim 11
Dependent Claim
30 words
The improvements as recited in claim 6 or 7, wherein the direction of the electric field is substantially transverse to the direction of general molecular flow through the gel media.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |