US3772206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiothermoluminescence dosimeters and materials therefor
Assignee: Dai Nippon Toryo Co Ltd
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Filing: 1971-12-30
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Granted: 1973-11-13
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Expires: 1991-12-30
Abstract
Abstract A THERMOLUMINESCENT MATERIAL WHICH COMPRISES A COMPLEX OXIDE HOST CRYSTAL OF MAGNESIUM OXIDE-BORON OXIDE AND TERBIUM AND/OR DYSPROSIUM AS AN ACTIVATOR ELEMENT INCORPORATED THEREIN SHOWS STRONG THERMOLUMINESCENCE AFTER EXPOSURE TO IONIZING RADIATIONS AND THUS IS USEFUL AS A LUMINESCENT MATERIALS FOR RADIOTHERMOLUMINESCENCE DOSIMETERS.
Inventors
- 👤 T Hitomi
- 👤 S Nishikawa
- 👤 H Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:05
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701; C09K11/7703; C09K11/7712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |