Patent USRE28340E successfully refreshed from Google Patents.
USRE28340E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoluminescent radiation pellets
Assignee: —
•
Filing: 1972-10-05
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Granted: 1975-02-18
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Expires: 1992-10-05
Abstract
Abstract 1. A PROCESS FOR PREPARING PELLETS ADAPTED TO BE MADE THERMOLUMINESCENT UPON ESXPOSURE TO RADIATION COMPRISING THE STEP EITHER OF PRESSING OR EXTRUDING A POWDER OF A THERMOLUMINESCABLE MATERIAL AT A PRESSURE OF AT LEAST 10,000 P.S.I. WHEN AT A TEMPERATURE OF AT LEAST ROOM TEMPERATURE AND NO HIGHER THAN 825*C., SAID PRESSURE BEING (AT LEAST 400,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF ROOM TEMPEATURE TO 100*C., AT LEAST 300,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF 100* TO 200*C., AND AT LEAST 200,000 P.S.I. WHEN IN THE RANGE OF 200-300*C.) LESS THAN 1.5 MILLION P.S.I., GREATER PRESSURES BEING REQUIRED AT LOWER TEMPERATURES.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:22
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/61; C09K11/615; C09K11/616; G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR PREPARING PELLETS ADAPTED TO BE MADE THERMOLUMINESCENT UPON ESXPOSURE TO RADIATION COMPRISING THE STEP EITHER OF PRESSING OR EXTRUDING A POWDER OF A THERMOLUMINESCABLE MATERIAL AT A PRESSURE OF AT LEAST 10,000 P.S.I. WHEN AT A TEMPERATURE OF AT LEAST ROOM TEMPERATURE AND NO HIGHER THAN 825*C., SAID PRESSURE BEING (AT LEAST 400,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF ROOM TEMPEATURE TO 100*C., AT LEAST 300,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF 100* TO 200*C., AND AT LEAST 200,000 P.S.I. WHEN IN THE RANGE OF 200-300*C.) LESS THAN 1.5 MILLION P.S.I., GREATER PRESSURES BEING REQUIRED AT LOWER TEMPERATURES.
Claim 2
Dependent Claim
107 words
A PROCESS FOR PREPARING PELLETS ADAPTED TO BE MADE THERMOLUMINESCENT UPON ESXPOSURE TO RADIATION COMPRISING THE STEP EITHER OF PRESSING OR EXTRUDING A POWDER OF A THERMOLUMINESCABLE MATERIAL AT A PRESSURE OF AT LEAST 10,000 P.S.I. WHEN AT A TEMPERATURE OF AT LEAST ROOM TEMPERATURE AND NO HIGHER THAN 825*C., SAID PRESSURE BEING (AT LEAST 400,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF ROOM TEMPEATURE TO 100*C., AT LEAST 300,000 P.S.I. WHEN SAID TEMPERATURE IS IN THE RANGE OF 100* TO 200*C., AND AT LEAST 200,000 P.S.I. WHEN IN THE RANGE OF 200-300*C.) LESS THAN 1.5 MILLION P.S.I., GREATER PRESSURES BEING REQUIRED AT LOWER TEMPERATURES.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |