US4411789A
Expired / Lapsed
US
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Magnetic resonance chromatography
Assignee: BIOTECH PATENT COMPANY Inc
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Filing: 1981-08-21
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Granted: 1983-10-25
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Expires: 2001-08-21
Abstract
Abstract A magnetic resonance chromatography system that enables the separation of charge carrying molecules to effectively take place. An oscillating magnetic field is generated in free space and applied in one of numerable orientations with the field lines parallel to the longitudinal axis of a chromatography column containing the gel media of a liquid gel chromatography apparatus. Molecules within the gel media which posses either a net positive or negative charge experience an "induced" flow due to eddy currents produced in the chromatography column. These "induced" flow events alter the motion of the charged molecules and therefore effect molecule separation.
Inventors
- 👤 Robert P. Liburdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:15
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/30; B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/34; B01D15/38; B01D15/3861; B01D15/3885; G01N; G01N30/00; G01N30/02; G01R33/44; G01R33/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
In a liquid gel chromatography apparatus having a gel media for partitioning molecules possessing a net positive or negative charge, the improvement therein comprising means operably associated with said chromatography apparatus for generating an oscillating magnetic field which produces eddy currents within said gel media, whereby said eddy currents effect separation patterns for said molecules.
Claim 2
Dependent Claim
55 words
In a liquid gel chromatography apparatus having a gel media for partitioning molecules possessing a net positive or negative charge, the improvement therein comprising means operably associated with said chromatography apparatus for generating an oscillating magnetic field which produces eddy currents within said gel media, whereby said eddy currents effect separation patterns for said molecules.
Claim 3
Dependent Claim
49 words
In a liquid gel chromatography apparatus as defined in claim 1 wherein said chromatography apparatus include a chromatography column for containing said gel media and said magnetic field is generated in free space and applied with the field lines substantially parallel to the longitudinal axis to said chromatography column.
Claim 4
Dependent Claim
38 words
In a liquid gel chromatography apparatus as defined in claim 1 wherein said magnetic field oscillates at preselected frequencies and said molecules are influenced by said frequencies corresponding to lateral diffusion and rotational relaxation times for said molecules.
Claim 5
Independent Claim
70 words
A method for enhancing the partitioning of molecules possessing a net positive or negative charge comprising the steps of: (a) containing said molecules within a gel media within a liquid gel chromatography apparatus; and (b) applying an oscillating magnetic field to said gel media thereby producing eddy currents within said gel media whereby said molecules experience an "induced" flow due to said eddy currents and therefore establish new separation patterns.
Claim 6
Independent Claim
70 words
A method for enhancing the partitioning of molecules possessing a net positive or negative charge comprising the steps of: (a) containing said molecules within a gel media within a liquid gel chromatography apparatus; and (b) applying an oscillating magnetic field to said gel media thereby producing eddy currents within said gel media whereby said molecules experience an "induced" flow due to said eddy currents and therefore establish new separation patterns.
Claim 7
Dependent Claim
67 words
A method for enhancing the partitioning of molecules possessing a net positive or negative charge as defined in claim 4 further comprising the steps of containing said gel media within a chromatography column included as part of said chromatography apparatus and applying said magnetic field to said gel media with the field lines of said magnetic field substantially parallel to the longitudinal axis of said chromatography column.
Claim 8
Dependent Claim
51 words
A method for enhancing the partitioning of molecules possessing a net positive or negative charge as defined in claim 4 further comprising the step of oscillating said magnetic field at preselected frequencies whereby said molecules are influenced by said frequencies corresponding to lateral diffusion and rotational relaxation times for said molecules.
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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |