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US4641098A
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Parallel single turn saddle resonator for nuclear magnetic resonance signal reception
Assignee: Doty Scientific Inc
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Filing: 1985-03-15
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Granted: 1987-02-03
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Expires: 2005-03-15
Abstract
Abstract The capacitively shortened slotted line resonator or single turn saddle coil, as used in nuclear magnetic resonance signal reception, is modified by forming two axial slots from one end nearly to the opposite end through the center of the axial conductor bands. The resulting parallel arrangement of two inductor saddle loops is essentially transparent to rf magnetic fields orthogonal to its own rf magnetic field direction and orthogonal to the axis of the resonator, which allows for higher efficiency and sensitivity when two orthogonal saddle coils are employed in double resonance NMR experiments.
Inventors
- 👤 Francis D. Doty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:17
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/36; G01R33/3678; G01R33/34; G01R33/343; G01R33/345
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A parallel single turn saddle resonator for inducing or detecting transverse nuclear magnetization in a sample, said resonator comprising an even number of inductor loops, said loops formed to the contour of one or more substantially concentric cylindrical surfaces and located symmetrically on at least one axis of a pair of mutually orthogonal axes which intersect orthogonally the axis of said cylindrical surface(s) at a given point, said loops on a given axis all electrically connected in parallel by suitable coupling means, and each loop including at least one break for the insertion of a capacitor.
Claim 2
Dependent Claim
96 words
A parallel single turn saddle resonator for inducing or detecting transverse nuclear magnetization in a sample, said resonator comprising an even number of inductor loops, said loops formed to the contour of one or more substantially concentric cylindrical surfaces and located symmetrically on at least one axis of a pair of mutually orthogonal axes which intersect orthogonally the axis of said cylindrical surface(s) at a given point, said loops on a given axis all electrically connected in parallel by suitable coupling means, and each loop including at least one break for the insertion of a capacitor.
Claim 3
Dependent Claim
21 words
A resonator as in 1 above in which said loops have one or more slits colinear with the resonant current path.
Claim 4
Dependent Claim
21 words
A resonator as in 1 above in which said loops have one or more slits colinear with the resonant current path.
References Cited (Backward Citations)
US3771055A
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US4439733A
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US4408162A
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US4446431A
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US4435680A
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US4463328A
Cited
US4563648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |