Patent US3112441A successfully refreshed from Google Patents.
US3112441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear resonance absorption apparatus
Assignee: Individual
•
Filing: 1960-08-15
•
Granted: 1963-11-26
•
Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Robinson Frank Neville Hosband
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:59
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
IN APPARATUS FOR DETECTING MAGNETIC RESONANCE PHENOMENA, AN INDUCTIVE COIL WINDING FOR PROVIDING A RADIO FREQUENCY OSCILLATING FIELD IN A SAMPLE OF MATERIAL UNDER TEST, SAID COIL WINDING FORMING PART OF THE RESONANT TANK CIRCUIT OF A RADIO FREQUENCY OSCILLATION GENERATOR COMPRISING RADIO FREQUENCY AMPLIFIER AND LIMITER MEANS PROVIDING A SUBSTANTIALLY CONSTANT AMPLITUDE RADIO FREQUENCY OUTPUT OSCILLATION FOR ANY AMPLITUDE OF INPUT RADIO FREQUENCY OSCILLATION THERETO WHICH IS IN EXCESS OF A PREDETERMINED AMPLITUDE AND A REGENERATIVE FEEDBACK CIRCUIT INCLUDING ALTERNATOR MEANS BETWEEN OUTPUT OF SAID AMPLIFIER/LIMITER MEANS AND SAID RESONANT TANK CIRCUIT TO APPLY A CONSTANT AMPLITUDE RADIO FREQUENCY OSCILLATION WHICH IS A SMALL CONSTANT PROPORTION OF SAID OUTPUT OF SAID AMPLIFIER/LIMITER MEANS TO MAINTAIN OSCILLATION IN SAID RESONANT TANK CIRCUIT.
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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |