US2733216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making plastic scintillation
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:55
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD OF PRODUCING PHOSPHOR UNITS FOR USE IN THE DETECTION AND MEASUREMENT OF PENETRATING RADIATION, SUCH AS GAMMA RAYS, WHICH COMPRISES FORMING A MIXTURE OF POLYSTYRENE MOULDING POWDER, 0.2 TO 20% OF ITS WEIGHT OF A HYDROCARBON FLUORESCENCE-PRODUCING MATERIAL AND 0.002 TO 0.05% OF ITS WEIGHT OF AN AGENT WHICH SHIFTS THE FLUORESCENCE SPECTRUM INTO THE VISIBLE REGION, PLACING THE MIXTURE IN A MOULDING ZONE, HEATING THE MIXTURE TO A TEMPERATURE OF 85 TO 105* C. UNDER A PRESSURE OF 1000-2000 P.S.I. TO EXPEL AIR, RAISING THE PRESSURE TO 4,000 TO 20,000 P.S.I., AND HEATING THE MASS AT A TEMPERATURE IN EXCESS OF THE MELTING POINT OF THE PHOSPHOR MATERIAL AND NOT LOWER THAN THE NORMAL CURING TEMPERATURE OF THE POLYSTYRENE TO EFFECT UNIFORM DISTRIBUTION OF THE COMPONENTS IN THE POLYSTYRENE AND FORM A UNIFORMLY CLEAR PRODUCT AND COOLING THE MASS TO SOLIDIFY IT IN THE DESIRED STRUCTURAL FORM.
Claim 2
Independent Claim
150 words
A METHOD OF PRODUCING PHOSPHOR UNITS FOR USE IN THE DETECTION AND MEASUREMENT OF PENETRATING RADIATION, SUCH AS GAMMA RAYS, WHICH COMPRISES FORMING A MIXTURE OF POLYSTYRENE MOULDING POWDER, 0.2 TO 20% OF ITS WEIGHT OF A HYDROCARBON FLUORESCENCE-PRODUCING MATERIAL AND 0.002 TO 0.05% OF ITS WEIGHT OF AN AGENT WHICH SHIFTS THE FLUORESCENCE SPECTRUM INTO THE VISIBLE REGION, PLACING THE MIXTURE IN A MOULDING ZONE, HEATING THE MIXTURE TO A TEMPERATURE OF 85 TO 105* C. UNDER A PRESSURE OF 1000-2000 P.S.I. TO EXPEL AIR, RAISING THE PRESSURE TO 4,000 TO 20,000 P.S.I., AND HEATING THE MASS AT A TEMPERATURE IN EXCESS OF THE MELTING POINT OF THE PHOSPHOR MATERIAL AND NOT LOWER THAN THE NORMAL CURING TEMPERATURE OF THE POLYSTYRENE TO EFFECT UNIFORM DISTRIBUTION OF THE COMPONENTS IN THE POLYSTYRENE AND FORM A UNIFORMLY CLEAR PRODUCT AND COOLING THE MASS TO SOLIDIFY IT IN THE DESIRED STRUCTURAL FORM.
References Cited (Backward Citations)
US2559219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |