US3229097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoluminescent dosimeter shield
Assignee: Revvity Inc
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Filing: 1963-04-24
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Granted: 1966-01-11
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robin K Durkee
- 👤 Arthur C Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A THERMOLUMINESCENT DOSIMETER COMPRISING: A GLASS ENVELOPE; A RADIATION DETECTOR MOUNTED WITHIN SAID ENVELOPE COMPRISING THERMOLUMINESCENT MANGANESE-ACTIVATED CALCIUM FLUORIDE; A RADIATION SHIELD ENCOMPASSING SAID ENVELOPE EXCEPT FOR THE BASE THEREOF, SAID SHIELD COMPRISING A THIN LAYER OF LEAD DISPOSED EXTERIORLY OF AND IN CLOSE PROXIMITY TO SAID ENVELOPE AND A LAYER OF TIN DISPOSED EXTERIORLY OF AND IN CONTACT WITH SAID LAYER OF LEAD, SAID LAYERS OF TIN AND LEAD HAVING COMMON VOIDS TO PERMIT IONIZING RADIATION TO IMPINGE WITHOUT ATTENUATION UPON APPROXIMATELY 10% OF THE EXTERIOR SURFACE AREA OF SAID THERMOLUMINESCENT MANGANESEACTIVATED CALCIUM FLUORIDE.
Claim 2
Dependent Claim
95 words
A THERMOLUMINESCENT DOSIMETER COMPRISING: A GLASS ENVELOPE; A RADIATION DETECTOR MOUNTED WITHIN SAID ENVELOPE COMPRISING THERMOLUMINESCENT MANGANESE-ACTIVATED CALCIUM FLUORIDE; A RADIATION SHIELD ENCOMPASSING SAID ENVELOPE EXCEPT FOR THE BASE THEREOF, SAID SHIELD COMPRISING A THIN LAYER OF LEAD DISPOSED EXTERIORLY OF AND IN CLOSE PROXIMITY TO SAID ENVELOPE AND A LAYER OF TIN DISPOSED EXTERIORLY OF AND IN CONTACT WITH SAID LAYER OF LEAD, SAID LAYERS OF TIN AND LEAD HAVING COMMON VOIDS TO PERMIT IONIZING RADIATION TO IMPINGE WITHOUT ATTENUATION UPON APPROXIMATELY 10% OF THE EXTERIOR SURFACE AREA OF SAID THERMOLUMINESCENT MANGANESEACTIVATED CALCIUM FLUORIDE.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |