Patent US3130306A successfully refreshed from Google Patents.
US3130306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear radiation dosimeter using composite filter and a single element filter
Assignee: Individual
•
Filing: 1961-09-19
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Granted: 1964-04-21
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Storm Ellery
- 👤 Shlaer Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:37
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A NUCLEAR RADIATION DOSIMETER FILM BADGE FOR RECORDING EXPOSURE TO X OR GAMMA RAYS OVER AN ENERGY RANGE OF FROM ABOUT 40 TO 1250 KEV. WITH A RESPONSE LIMITED TO NOT EXCEED THE RATIO OF 0.7 TO 1.8 ON A LOGARITHMIC SCALE, COMPRISING A FLAT ELONGATED PLASTIC HOUSING AND A FILM SUPPORTED SUBSTANTIALLY IN THE MEDIAN PLANE PARALLEL TO THE PLANE OF FLATNESS OF SAID HOUSING, SAID FILM HAVING DISPROPORTIONATE SENSITIVITY TO LOW ENERGY RADIATION OF THE ORDER OF 40 KEV. COMPARED TO THE SENSITIVITY TO HIGH ENERGY RADIATION OF THE ORDER OF 100 KEV. AND ABOVE, A COMPOSITE METAL PLATE FILTER AND A SINGLE METAL PLATE FILTER SUPPORTED IN SAID HOUSING ADJACENT TO AND PARALLEL TO SAID FILM, SAID COMPOSITE METAL PLATE CONTAINING A PLURALITY OF METALS OF DISSIMILAR RADIATION ABSORPTIVE CHARACTERISTICS RELATIVE TO ENERGY, AND SAID SINGLE FILTER CONSISTING OF A METAL HAVING A PEAK ABSORPTIVE CHARACTERISTIC AT ABOUT 50 KEV., THE RANGE OF DISPROPORTIONATE FILM
Claim 2
Dependent Claim
158 words
A NUCLEAR RADIATION DOSIMETER FILM BADGE FOR RECORDING EXPOSURE TO X OR GAMMA RAYS OVER AN ENERGY RANGE OF FROM ABOUT 40 TO 1250 KEV. WITH A RESPONSE LIMITED TO NOT EXCEED THE RATIO OF 0.7 TO 1.8 ON A LOGARITHMIC SCALE, COMPRISING A FLAT ELONGATED PLASTIC HOUSING AND A FILM SUPPORTED SUBSTANTIALLY IN THE MEDIAN PLANE PARALLEL TO THE PLANE OF FLATNESS OF SAID HOUSING, SAID FILM HAVING DISPROPORTIONATE SENSITIVITY TO LOW ENERGY RADIATION OF THE ORDER OF 40 KEV. COMPARED TO THE SENSITIVITY TO HIGH ENERGY RADIATION OF THE ORDER OF 100 KEV. AND ABOVE, A COMPOSITE METAL PLATE FILTER AND A SINGLE METAL PLATE FILTER SUPPORTED IN SAID HOUSING ADJACENT TO AND PARALLEL TO SAID FILM, SAID COMPOSITE METAL PLATE CONTAINING A PLURALITY OF METALS OF DISSIMILAR RADIATION ABSORPTIVE CHARACTERISTICS RELATIVE TO ENERGY, AND SAID SINGLE FILTER CONSISTING OF A METAL HAVING A PEAK ABSORPTIVE CHARACTERISTIC AT ABOUT 50 KEV., THE RANGE OF DISPROPORTIONATE FILM
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |