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US3085195A Expired / Lapsed US ⏱️ 0.0 years remaining

Gyromagnetic resonance methods and apparatus

Assignee: Varian Medical Systems Inc
•
Filing: 1957-07-11
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Granted: 1963-04-09
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Expires: 1977-07-11
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Abstract

No abstract record available.

Inventors

  • 👤 Weston A Anderson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:52
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 226 words
THE METHOD OF PRODUCING A STABLE GYROMAGNETIC RESONANCE SIGNAL FROM A SAMPLE GROUP OF GYROMAGNETIC BODIES INCLUDING THE STEPS OF, IMMERSING A CONTROL GROUP OF GYROMAGNETIC BODIES AND A SAMPLE GROUP OF GYROMAGNETIC BODIES HAVING DIFFERENT RESONANT FREQUENCIES IN A COMMON POLARIZING MAGNETIC FIELD SUBJECT TO MINUTE RANDOM INTENSITY FLUCTUATIONS WITH TIME, SIMULTANEOUSLY APPLYING TWO ALTERNATING MAGNETIC FIELDS AT DIFFERENT FREQUENCIES COMMONLY TO BOTH SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES TO EXCITE GYROMAGNETIC RESONANCE OF SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES SUCH THAT BOTH GROUPS ARE SIMULTANEOUSLY SUBJECTED SUBSTANTIALLY ALIKE TO THE MINUTE RANDOM FREQUENCY FLUCTUATIONS, IF ANY, OF THE COMMON A.C. FIELDS, AUTOMATICALLY CONTROLLING THROUGH THE INTERMEDIARY OF THE CONTROL GROUP OF GYROMAGNETIC BODIES THE GYROMAGNETIC RATIO OF THE FREQUENCY OF THE COMMON A.C. FIELDS TO THE INTENSITY OF THE POLARIZING MAGNETIC FIELD TO SUSTAIN RESONANCE OF THE CONTROL GROUP OF GYROMAGNETIC BODIES WHEREBY SAID FLUCTUATIONS IN THE APPLIED GYROMAGNETIC RATIO CONDITIONS OF FREQUENCY AND FIELD INTENSITY ARE COMPENSATED, TO THEREBY PROVIDE GYROMAGNETIC RESONANCE SIGNALS SUBSTANTIALLY FREE OF THE EFFECTS OF SAID FLUCTUATIONS, SIMULTANEOUSLY RECEIVING GYROMAGNETIC RESONANCE SIGNALS OF THE CONTROL AND SAMPLE GROUPS AT THE DIFFERENT RESONANT FREQUENCIES IN ONE RECEIVING STRUCTURE COUPLED TO THE CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES, AND SEPARATING THE SAMPLE RESONANT SIGNAL FROM THE CONTROL RESONANT SIGNAL AS RECEIVED IN THE ONE RECEIVING STRUCTURE.
Claim 2
Independent Claim 226 words
THE METHOD OF PRODUCING A STABLE GYROMAGNETIC RESONANCE SIGNAL FROM A SAMPLE GROUP OF GYROMAGNETIC BODIES INCLUDING THE STEPS OF, IMMERSING A CONTROL GROUP OF GYROMAGNETIC BODIES AND A SAMPLE GROUP OF GYROMAGNETIC BODIES HAVING DIFFERENT RESONANT FREQUENCIES IN A COMMON POLARIZING MAGNETIC FIELD SUBJECT TO MINUTE RANDOM INTENSITY FLUCTUATIONS WITH TIME, SIMULTANEOUSLY APPLYING TWO ALTERNATING MAGNETIC FIELDS AT DIFFERENT FREQUENCIES COMMONLY TO BOTH SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES TO EXCITE GYROMAGNETIC RESONANCE OF SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES SUCH THAT BOTH GROUPS ARE SIMULTANEOUSLY SUBJECTED SUBSTANTIALLY ALIKE TO THE MINUTE RANDOM FREQUENCY FLUCTUATIONS, IF ANY, OF THE COMMON A.C. FIELDS, AUTOMATICALLY CONTROLLING THROUGH THE INTERMEDIARY OF THE CONTROL GROUP OF GYROMAGNETIC BODIES THE GYROMAGNETIC RATIO OF THE FREQUENCY OF THE COMMON A.C. FIELDS TO THE INTENSITY OF THE POLARIZING MAGNETIC FIELD TO SUSTAIN RESONANCE OF THE CONTROL GROUP OF GYROMAGNETIC BODIES WHEREBY SAID FLUCTUATIONS IN THE APPLIED GYROMAGNETIC RATIO CONDITIONS OF FREQUENCY AND FIELD INTENSITY ARE COMPENSATED, TO THEREBY PROVIDE GYROMAGNETIC RESONANCE SIGNALS SUBSTANTIALLY FREE OF THE EFFECTS OF SAID FLUCTUATIONS, SIMULTANEOUSLY RECEIVING GYROMAGNETIC RESONANCE SIGNALS OF THE CONTROL AND SAMPLE GROUPS AT THE DIFFERENT RESONANT FREQUENCIES IN ONE RECEIVING STRUCTURE COUPLED TO THE CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES, AND SEPARATING THE SAMPLE RESONANT SIGNAL FROM THE CONTROL RESONANT SIGNAL AS RECEIVED IN THE ONE RECEIVING STRUCTURE.

References Cited (Backward Citations)

US2589494A Cited
GB672156A Cited
US2837649A Cited
US2912641A Cited

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

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