Patent US2602291A successfully refreshed from Google Patents.
US3173084A
Expired / Lapsed
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Gyromagnetic resonance method and apparatus
Assignee: Varian Medical Systems Inc
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Filing: 1962-04-30
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Granted: 1965-03-09
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Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Weston A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:18
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/46; G01R33/4608; G01R33/28; G01R33/32; G01R33/36; G01R33/38; G01R33/389
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF PRODUCING SELF-SUBSTAINING SIDE BAND GYROMAGNETIC RESONANCE OSCILLATIONS WHICH COMPRISES THE STEPS OF POSITIONING A GYROMAGNETIC SUBSTANCE IN A POLARIZING MAGNETIC FIELD, APPLYING A DRIVING RADIO-FREQUENCY MAGNETIC FIELD TO THE SUBSTANCE SUBSTANTIALLY NORMAL TO THE DIRECTION OF THE POLARIZING FIELD, MODULATING ONE OF SAID MAGNETIC FIELDS AT A PERIODIC LOW FREQUENCY RATE TO PRODUCE RYROMAGNETIC RESONANCE IN THE SUSTANCE AT A SIDE BAND RADIO-FREQUENCY DIFFERING FROM THE DRIVING RADIO FREQUENCY BY AN INTEGRAL MULTIPLE OF THE FREQUENCY OF THE MODULATING SIGNAL, DETECTING SAID ONE SIDE BAND RESONANCE SIGNAL TO PRODUCE AN OUTPUT SIGNAL AT THE SAID LOW FREQUENCY RATE, AND UTILIZING SAID LOW FREQUENCY OUTPUT SIGNAL FOR SAID MAGNETIC FIELD MODULATION AT THE LOW FREQUENCY RATE.
Claim 2
Independent Claim
118 words
THE METHOD OF PRODUCING SELF-SUBSTAINING SIDE BAND GYROMAGNETIC RESONANCE OSCILLATIONS WHICH COMPRISES THE STEPS OF POSITIONING A GYROMAGNETIC SUBSTANCE IN A POLARIZING MAGNETIC FIELD, APPLYING A DRIVING RADIO-FREQUENCY MAGNETIC FIELD TO THE SUBSTANCE SUBSTANTIALLY NORMAL TO THE DIRECTION OF THE POLARIZING FIELD, MODULATING ONE OF SAID MAGNETIC FIELDS AT A PERIODIC LOW FREQUENCY RATE TO PRODUCE RYROMAGNETIC RESONANCE IN THE SUSTANCE AT A SIDE BAND RADIO-FREQUENCY DIFFERING FROM THE DRIVING RADIO FREQUENCY BY AN INTEGRAL MULTIPLE OF THE FREQUENCY OF THE MODULATING SIGNAL, DETECTING SAID ONE SIDE BAND RESONANCE SIGNAL TO PRODUCE AN OUTPUT SIGNAL AT THE SAID LOW FREQUENCY RATE, AND UTILIZING SAID LOW FREQUENCY OUTPUT SIGNAL FOR SAID MAGNETIC FIELD MODULATION AT THE LOW FREQUENCY RATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |