Patent US3834798A successfully refreshed from Google Patents.
Patent US4996482A successfully refreshed from Google Patents.
US4996482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor stick for NMR probe
Assignee: Jeol Ltd
•
Filing: 1989-09-20
•
Granted: 1991-02-26
•
Expires: 2009-09-20
Abstract
Abstract A capacitor stick having a base electrode on whose tip is installed a chip capacitor is disclosed. The chip capacitor is insulated from the base electrode. A compensating coil is inserted between the base electrode and chip capacitor, and a series resonant circuit regarding a decoupling high frequency is composed of the chip capacitor and compensating coil.
Inventors
- 👤 Teruaki Fujito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:04
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/36; G01R33/3628; G01R33/34; G01R33/34092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
In a sample coil arrangement for a nuclear magnetic resonance device wi&.h a capacitor stick arranged adjacent the sample and constituting part of the tuning circuit for the observation frequency, the improvement comprising: (a) said capacitor stick having a chip capacitor spaced from a base electrode by an insulating means, and (b) a compensating coil connecting the base electrode and the chip capacitor, said chip capacitor and compensating coil forming a series resonant circuit such that the resonant frequency corresponds to an NMR decoupling high frequency.
Claim 2
Dependent Claim
86 words
In a sample coil arrangement for a nuclear magnetic resonance device wi&.h a capacitor stick arranged adjacent the sample and constituting part of the tuning circuit for the observation frequency, the improvement comprising: (a) said capacitor stick having a chip capacitor spaced from a base electrode by an insulating means, and (b) a compensating coil connecting the base electrode and the chip capacitor, said chip capacitor and compensating coil forming a series resonant circuit such that the resonant frequency corresponds to an NMR decoupling high frequency.
Claim 3
Dependent Claim
87 words
A capacitor stick for use in a tuning circuit installed in an NMR probe, comprising: a stick member; a lower base electrode attached to the end of the stick element; an upper base electrode spaced from the lower base electrode by an insulating rod; a chip capacitor attached to the upper base electrode; and a compensating coil which connects the upper base electrode and the lower base electrode, said compensating coil forming a series resonant circuit regarding the decoupling high frequency in combination with the chip capacitor.
Claim 4
Dependent Claim
87 words
A capacitor stick for use in a tuning circuit installed in an NMR probe, comprising: a stick member; a lower base electrode attached to the end of the stick element; an upper base electrode spaced from the lower base electrode by an insulating rod; a chip capacitor attached to the upper base electrode; and a compensating coil which connects the upper base electrode and the lower base electrode, said compensating coil forming a series resonant circuit regarding the decoupling high frequency in combination with the chip capacitor.
References Cited (Backward Citations)
US3388322A
Cited
US4641097A
Cited
US4739271A
Cited
US4737715A
Cited
US4710719A
Cited
US4755756A
Cited
US4742304A
Cited
US4837515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |