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US3109138A Expired / Lapsed US ⏱️ 0.0 years remaining

Gyromagnetic resonance methods and apparatus

Assignee: Varian Medical Systems Inc
•
Filing: 1956-08-29
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Granted: 1963-10-29
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Expires: 1976-08-29
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Abstract

No abstract record available.

Inventors

  • 👤 Russell H Varian

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 00:13
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/46; G01N; G01N24/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 323 words
THE METHOD OF PRODUCING AN EXTERMELY STABLE HIGH RESOLUTION GYROMAGNETIC RESONANCE SPECTRUM FROM A SAMPLE GROUP OF GYROMAGNETIC BODIES INCLUDING THE STEPS OF, IMMERSING A CONTROL GROUP OF GYROMAGNETIC BODIES AND THE SAMPLE GROUP OF GYROMATNETIC BODIES IN A COMMON POLARIZING MAGNETIC FIELD SUBJECT TO MINUTE RANDOM INTENSITY FLUCTUATIONS WITH TIME, WHEREBY A POLARIZING MAGNETIC FIELD HAVING A LIKE RANDOM FLUCTUATIONS WITH TIME IS APPLIED TO BOTH THE CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES, APPLYING AN ALTERNATING MAGNETIC FIELD DERIVED FROM A COMMON A.C. SOURCE SIMULTANEOUSLY TO BOTH SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES TO EXCITE GYROMAGNETIC RESONANCE OF SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES IN THE APPLIED POLARIZING MAGNETIC FIELD SUCH THAT BOTH GROUPS ARE SIMULTANEOUSLY SUBJECTED SUBSTANTIALLY ALIKE TO MINUTE RANDOM FREQUENCY FLUCTUATIONS OF THE COMMON A.C. SOURCE, AUTOMATICALLY CONTROLLING THROUGH THE INTERMEDIARY OF THE CONTROL GROUP OF GYROMAGNETIC BODIES THE GYROMAGNETIC RATIO CONDITIONS APPLIED TO THE SAMPLE AND CONTROL GROUPS OF GYROMAGNETIC BODIES, SUCH RATIO CONDITIONS DEFINED BY THE RATIO OF THE FREQUENCY OF THE APPLIED A.C. MAGNETIC FIELD TO THE INTENSITY OF THE APPLIED POLARIZING MAGNETIC FIELD, BY AUTOMATICALLY CONTROLLING THE FREQUENCY OF THE APPLIED A.C. MAGNETIC FIELD IN A COMPENSATING RESPONSE TO OFFSET MINUTE RANDOM FLUCTUATIONS IN THE POLARIZING MAGNETIC FIELD TO SUSTAIN RESONANCE OF THE CONTROL GROUP IN THE POLARIZING MAGNETIC FIELD WHEREBY THE APPLIED GYROMAGNETIC RATIO CONDITIONS ARE MAINTAINED FREE OF RANDOM FLUCTUATIONS, RECEIVING FROM THE RESONANT SAMPLE GROUP OF GYROMAGNETIC BODIES A GYROMAGNETIC RESONANCE SIGNAL WHEREBY THE SAMPLE RESONANCE SIGNAL IS FREE OF THE RANDOM FLUCTUATIONS IN BOTH THE POLARIZING MAGNETIC FIELD INTENSITY AND THE FREQUENCY OF THE A.C. MAGNETIC FIELD, AND SWEEPING THE VALUE OF THE AUTOMATICALLY CONTROLLED AND APPLIED GYROMAGNETIC RATIO AS APPLIED TO THE SAMPLE GROUP TO PRODUCE SUCCESSIVE TIME-DISPLACED RESONANCES OF THE CERTAIN DIFFERENT GYROMAGNETIC GROUPS, IF ANY, WITHIN THE SAMPLE GROUP WHEREBY AN EXTREMELY STABLE AND ACCURATE GYROMAGNETIC RESONANCE SPECTRUM OF THE SAMPLE IS OBTAINED.
Claim 2
Independent Claim 323 words
THE METHOD OF PRODUCING AN EXTERMELY STABLE HIGH RESOLUTION GYROMAGNETIC RESONANCE SPECTRUM FROM A SAMPLE GROUP OF GYROMAGNETIC BODIES INCLUDING THE STEPS OF, IMMERSING A CONTROL GROUP OF GYROMAGNETIC BODIES AND THE SAMPLE GROUP OF GYROMATNETIC BODIES IN A COMMON POLARIZING MAGNETIC FIELD SUBJECT TO MINUTE RANDOM INTENSITY FLUCTUATIONS WITH TIME, WHEREBY A POLARIZING MAGNETIC FIELD HAVING A LIKE RANDOM FLUCTUATIONS WITH TIME IS APPLIED TO BOTH THE CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES, APPLYING AN ALTERNATING MAGNETIC FIELD DERIVED FROM A COMMON A.C. SOURCE SIMULTANEOUSLY TO BOTH SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES TO EXCITE GYROMAGNETIC RESONANCE OF SAID CONTROL AND SAMPLE GROUPS OF GYROMAGNETIC BODIES IN THE APPLIED POLARIZING MAGNETIC FIELD SUCH THAT BOTH GROUPS ARE SIMULTANEOUSLY SUBJECTED SUBSTANTIALLY ALIKE TO MINUTE RANDOM FREQUENCY FLUCTUATIONS OF THE COMMON A.C. SOURCE, AUTOMATICALLY CONTROLLING THROUGH THE INTERMEDIARY OF THE CONTROL GROUP OF GYROMAGNETIC BODIES THE GYROMAGNETIC RATIO CONDITIONS APPLIED TO THE SAMPLE AND CONTROL GROUPS OF GYROMAGNETIC BODIES, SUCH RATIO CONDITIONS DEFINED BY THE RATIO OF THE FREQUENCY OF THE APPLIED A.C. MAGNETIC FIELD TO THE INTENSITY OF THE APPLIED POLARIZING MAGNETIC FIELD, BY AUTOMATICALLY CONTROLLING THE FREQUENCY OF THE APPLIED A.C. MAGNETIC FIELD IN A COMPENSATING RESPONSE TO OFFSET MINUTE RANDOM FLUCTUATIONS IN THE POLARIZING MAGNETIC FIELD TO SUSTAIN RESONANCE OF THE CONTROL GROUP IN THE POLARIZING MAGNETIC FIELD WHEREBY THE APPLIED GYROMAGNETIC RATIO CONDITIONS ARE MAINTAINED FREE OF RANDOM FLUCTUATIONS, RECEIVING FROM THE RESONANT SAMPLE GROUP OF GYROMAGNETIC BODIES A GYROMAGNETIC RESONANCE SIGNAL WHEREBY THE SAMPLE RESONANCE SIGNAL IS FREE OF THE RANDOM FLUCTUATIONS IN BOTH THE POLARIZING MAGNETIC FIELD INTENSITY AND THE FREQUENCY OF THE A.C. MAGNETIC FIELD, AND SWEEPING THE VALUE OF THE AUTOMATICALLY CONTROLLED AND APPLIED GYROMAGNETIC RATIO AS APPLIED TO THE SAMPLE GROUP TO PRODUCE SUCCESSIVE TIME-DISPLACED RESONANCES OF THE CERTAIN DIFFERENT GYROMAGNETIC GROUPS, IF ANY, WITHIN THE SAMPLE GROUP WHEREBY AN EXTREMELY STABLE AND ACCURATE GYROMAGNETIC RESONANCE SPECTRUM OF THE SAMPLE IS OBTAINED.

References Cited (Backward Citations)

US2589494A Cited
US2602835A Cited
GB727129A Cited
GB745873A Cited
GB746114A 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) 1966-10-28 1967-04-29 1967-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-10-28 1971-04-29 1971-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-10-28 1975-04-29 1975-10-29 $7700.00 Window Closed / Lapsed

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