Patent US4652827A successfully refreshed from Google Patents.
US4652827A
Expired / Lapsed
US
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Nuclear magnetic resonance spectrometer
Assignee: Jeol Ltd
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Filing: 1985-02-26
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Granted: 1987-03-24
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Expires: 2005-02-26
Abstract
Abstract The present invention provides a plurality of transmitter/receiver coils instead of a single transmitter/receiver coil heretofore used. RF pulses containing the resonance frequency of a nuclide to be observed are successively supplied to these coils. The resultant resonance signals are stored and accumulated individually for the separate transmitter/receiver coils to obtain visual information with a high signal-to-noise ratio in a short time.
Inventors
- 👤 Keiji Eguchi
- 👤 Kunito Komatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:07
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/46; G01R33/28; G01R33/32; G01R33/34; G01R33/341; G01R33/3415
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
A nuclear magnetic resonance spectrometer for gathering a density distribution over an area comprising: a means for producing a static magnetic field; a plurality of transmitter/receiver coils arranged in a two-dimensional array placed in the magnetic field; a means for repeatedly producing an RF pulse containing the resonance frequency of a nuclide to be observed; a switching means for allowing the RF pulses to be successively supplied to the coils and applied to a sample under examination; a receiver circuit for picking up the resonance signals detected by the coils after the application of the RF pulses; and means for separately storing the data about the picked up resonance signals for the different coils in a two-dimensional matrix.
Claim 2
Dependent Claim
118 words
A nuclear magnetic resonance spectrometer for gathering a density distribution over an area comprising: a means for producing a static magnetic field; a plurality of transmitter/receiver coils arranged in a two-dimensional array placed in the magnetic field; a means for repeatedly producing an RF pulse containing the resonance frequency of a nuclide to be observed; a switching means for allowing the RF pulses to be successively supplied to the coils and applied to a sample under examination; a receiver circuit for picking up the resonance signals detected by the coils after the application of the RF pulses; and means for separately storing the data about the picked up resonance signals for the different coils in a two-dimensional matrix.
Claim 3
Dependent Claim
29 words
The nuclear magnetic resonance spectrometer of claim 1, wherein the transmitter/receiver coils are arranged in close proximity to the sample under examination and along the surface of the sample.
Claim 4
Dependent Claim
23 words
The nuclear magnetic resonance spectrometer of claim 1, wherein shield members are mounted among the transmitter/receiver coils to prevent interference among the coils.
Claim 5
Dependent Claim
23 words
The nuclear magnetic resonance spectrometer of claim 2, wherein shield members are mounted among the transmitter/receiver coils to prevent interference among the coils.
Claim 6
Dependent Claim
19 words
The nuclear magnetic resonance spectrometer of claim 1, wherein the means for storing the data has an accumulation function.
Claim 7
Dependent Claim
19 words
The nuclear magnetic resonance spectrometer of claim 2, wherein the means for storing the data has an accumulation function.
Claim 8
Dependent Claim
19 words
The nuclear magnetic resonance spectrometer of claim 3, wherein the means for storing the data has an accumulation function.
Claim 9
Dependent Claim
27 words
The nuclear magnetic resonance spectrometer of claim 5, wherein the order in which the RF pulses are supplied to the transmitter/receiver coils is changed for every accumulation.
Claim 10
Dependent Claim
27 words
The nuclear magnetic resonance spectrometer of claim 6, wherein the order in which the RF pulses are supplied to the transmitter/receiver coils is changed for every accumulation.
Claim 11
Dependent Claim
27 words
The nuclear magnetic resonance spectrometer of claim 7, wherein the order in which the RF pulses are supplied to the transmitter/receiver coils is changed for every accumulation.
References Cited (Backward Citations)
US3774103A
Cited
US4051429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |