Patent US3289399A successfully refreshed from Google Patents.
Patent US2835820A successfully refreshed from Google Patents.
US2835820A
Expired / Lapsed
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Curved crystal fluorescent x-ray spectrograph
Assignee: Individual
•
Filing: 1955-03-07
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Granted: 1958-05-20
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Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Jr La Verne S Birks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/207; G01N23/2076; G01N23/22; G01N23/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN X-RAY SPECTROSCOPE FOR DETERMING THE ELEMENTS OF A MATERIAL WHICH COMPRISES A SOURCE OF X-RAYS, MEANS FOR HOLDING A SPECIMENT TO BE IRRADIATED IN THE PATH OF A BEAM OF X-RAYS, A STATIONARY CURVED DIFFRACTING CRYSTAL POSITIONED TO RECEIVE EMERGENT RADIATION FROM THE IRRADIATED SPECIMEN ON ITS CONVEX SURFACE AT ANGLES, SUCH THAT THE WAFELENGTHS OF AN INCIDENT NARROW POLYCHROMATIC BEAM OF SAID RADIATION WHICH CORRESPONDS IN WIDTH TO A BEAM DRIVED FROM A LINE SOURCE PARALLEL TO THE GENERATRIX OF SAID CURVED DIFFRACTING CRYST AL ARE DIVERGENTLY DIFFRACTED BY REFLECTION FROM SAID CONVEX SURFACE TOWARD A RECORDING MEANS POSITIONED OPPOSITE SAID CONVEX SURFACE, SAID RECORDING MEANS INDIVIDUALLY RECORDING SAID DIVERGENTLY DIFFRACTED WAVELENGTHS OF RADIATION.
Claim 2
Dependent Claim
116 words
AN X-RAY SPECTROSCOPE FOR DETERMING THE ELEMENTS OF A MATERIAL WHICH COMPRISES A SOURCE OF X-RAYS, MEANS FOR HOLDING A SPECIMENT TO BE IRRADIATED IN THE PATH OF A BEAM OF X-RAYS, A STATIONARY CURVED DIFFRACTING CRYSTAL POSITIONED TO RECEIVE EMERGENT RADIATION FROM THE IRRADIATED SPECIMEN ON ITS CONVEX SURFACE AT ANGLES, SUCH THAT THE WAFELENGTHS OF AN INCIDENT NARROW POLYCHROMATIC BEAM OF SAID RADIATION WHICH CORRESPONDS IN WIDTH TO A BEAM DRIVED FROM A LINE SOURCE PARALLEL TO THE GENERATRIX OF SAID CURVED DIFFRACTING CRYST AL ARE DIVERGENTLY DIFFRACTED BY REFLECTION FROM SAID CONVEX SURFACE TOWARD A RECORDING MEANS POSITIONED OPPOSITE SAID CONVEX SURFACE, SAID RECORDING MEANS INDIVIDUALLY RECORDING SAID DIVERGENTLY DIFFRACTED WAVELENGTHS OF RADIATION.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |