US3373348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear quadrupole resonance thermometer and/or temperature control
Assignee: Varian Medical Systems Inc
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Filing: 1967-07-03
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Granted: 1968-03-12
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Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Jacques P Vanier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:53
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A QUADRUPOLE REASONANCE TEMPERATURE RESPONSIVE APPARATUS INCLUDING, MEANS FOR PRODUCING AND APPLYING A CHARACTERISTICS REFERENCE FREQUENCY SIGNAL TO A TEMPERATURE SENSITIVE QUADRUPOLE RESONANCE MATERIAL FOR EXCITING QUADRUPOLE RESONANCE OF THE MATERIAL, MEANS FOR DETECTING THE QUADRUPOLE RESONANCE PRODUCED IN THE TEMPERATURE SENSITIVE QUADRUPOLE RESONANCE MATERIAL, MEANS FOR DERIVING A FEEDBACK CONTROL SIGNAL FROM THE DETECTED RESONANCE OF THE RESONANCE MATERIAL WHICH VARIES IN ACCORDANCE WITH THE DIFFERENCE BETWEEN THE REFERENCE FREQUENCY AND THE QUADRUPOLE RESONANCE FREQUENCY, AND MEANS RESPONSIVE TO THE FEEDBACK CONTROL SIGNAL FOR COUNTERACTING CHANGES
Claim 2
Dependent Claim
87 words
A QUADRUPOLE REASONANCE TEMPERATURE RESPONSIVE APPARATUS INCLUDING, MEANS FOR PRODUCING AND APPLYING A CHARACTERISTICS REFERENCE FREQUENCY SIGNAL TO A TEMPERATURE SENSITIVE QUADRUPOLE RESONANCE MATERIAL FOR EXCITING QUADRUPOLE RESONANCE OF THE MATERIAL, MEANS FOR DETECTING THE QUADRUPOLE RESONANCE PRODUCED IN THE TEMPERATURE SENSITIVE QUADRUPOLE RESONANCE MATERIAL, MEANS FOR DERIVING A FEEDBACK CONTROL SIGNAL FROM THE DETECTED RESONANCE OF THE RESONANCE MATERIAL WHICH VARIES IN ACCORDANCE WITH THE DIFFERENCE BETWEEN THE REFERENCE FREQUENCY AND THE QUADRUPOLE RESONANCE FREQUENCY, AND MEANS RESPONSIVE TO THE FEEDBACK CONTROL SIGNAL FOR COUNTERACTING CHANGES
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |