US3565567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for measuring the presence and/or concentration of an element in an atomic vapor
Assignee: Milton Roy LLC
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Filing: 1968-06-25
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Granted: 1971-02-23
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Expires: 1988-06-25
Abstract
Abstract A BEAM OF RADIATION FROM A CONTINUUM SOURCE IS DIRECTED THROUGH AN ATOMIC VAPOR. A RADIATION SENSITIVE DETECTOR MONITORS THE RADIATION FROM THE ATOMIC VAPOR. A MODULATOR IS INCLUDED SO THAT THE DETECTOR RECEIVES A WAVELENGTH MODULATED SIGNAL THAT PERIODICALLY INCLUDES THE WAVELENGTH OF THE SPECTRAL LINE CHARACTERISTIC OF THE ELEMENT TESTED. THE RADIATION SENSITIVE DETECTOR GENERATES A SIGNAL INDICATING THE PRESENCE AND/OR CONCENTRATION OF THE ELEMENT BY DETERMINING THE AMOUNT OF RADIATION ABSORBED, OR THE INTENSITY OF ATOMIC FLUORESCENCE EMITTED.
Inventors
- 👤 Stephen D Rains
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/3103; G01J; G01J3/00; G01J3/28; G01J3/42; G01J3/433
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |