Patent US3085196A successfully refreshed from Google Patents.
US3085196A
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Self-oscillators with nuclear spins subjected to magnetic resonance
Assignee: Sud Aviation Societe Nationale de Constructions Aerdnaettiques
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Filing: 1959-12-16
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Granted: 1963-04-09
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Expires: 1979-12-16
Abstract
No abstract record available.
Inventors
- 👤 Martin Georges Jacques Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:43
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/24; H; H03; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A SELF-OSCILLATOR WITH NUCLEAR SPINS SUBJECTED TO MAGNETIC RESONANCE AND USABLE FOR DETERMINING THE ABSOLUTE VALUE OF A MAGNETIC FIELD AND THE DIFFERENCE BETWEEN THE VALUES OF SUCH A FIELD IN AT LEAST TWO GIVEN POSITIONS, OF THE TYPE HAVING AN EXCITATION COIL WOUND AROUND A VESSEL CONTAINING THE NUCLEAR SPIN SAMPLE AND FED BY AN ALTERNATING CURRENT AT RESONANCE FREQUENCY, A PICK-UP COIL WOUND AROUND SAID VESSEL WITH ITS AXIS DISPOSED IN THE SAME PLANE OF, AND PERPENDICULAR TO, THE AXIS OF SAID EXCITATION COIL, AND AN AMPLIFIER THE OUTPUT AND INPUT OF WHICH ARE RESPECTIVELY CONNECTED TO THE EXCITATION COIL AND TO THE PICK-UP COIL; THE IMPROVEMENT ACCORDING TO WHICH THE AMPLIFIER IS APERIODIC, I.E. ACTIVE WITHOUT REACTIVE COMPONENT, AND COMPRISES AN INPUT AMPLIFYING STAGE, AND AN OUTPUT AMPLIFYING STAGE, BOTH EQUIPPED WITH AN ELECTRON TUBE, MEANS INSERTED BETWEEN SAID TWO STAGES FOR INTRO-
Claim 2
Dependent Claim
147 words
IN A SELF-OSCILLATOR WITH NUCLEAR SPINS SUBJECTED TO MAGNETIC RESONANCE AND USABLE FOR DETERMINING THE ABSOLUTE VALUE OF A MAGNETIC FIELD AND THE DIFFERENCE BETWEEN THE VALUES OF SUCH A FIELD IN AT LEAST TWO GIVEN POSITIONS, OF THE TYPE HAVING AN EXCITATION COIL WOUND AROUND A VESSEL CONTAINING THE NUCLEAR SPIN SAMPLE AND FED BY AN ALTERNATING CURRENT AT RESONANCE FREQUENCY, A PICK-UP COIL WOUND AROUND SAID VESSEL WITH ITS AXIS DISPOSED IN THE SAME PLANE OF, AND PERPENDICULAR TO, THE AXIS OF SAID EXCITATION COIL, AND AN AMPLIFIER THE OUTPUT AND INPUT OF WHICH ARE RESPECTIVELY CONNECTED TO THE EXCITATION COIL AND TO THE PICK-UP COIL; THE IMPROVEMENT ACCORDING TO WHICH THE AMPLIFIER IS APERIODIC, I.E. ACTIVE WITHOUT REACTIVE COMPONENT, AND COMPRISES AN INPUT AMPLIFYING STAGE, AND AN OUTPUT AMPLIFYING STAGE, BOTH EQUIPPED WITH AN ELECTRON TUBE, MEANS INSERTED BETWEEN SAID TWO STAGES FOR INTRO-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |