US2757291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation sensitive strontium sulfate and dosimeters employing same
Assignee: Individual
•
Filing: 1953-04-29
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Granted: 1956-07-31
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 James H Schulman
- 👤 Robert J Ginther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A RADIATION SENSITIVE MATERIAL CAPABLE OF DEVELOPING COLOR THEREIN ON EXPOSURE TO X-RAYS AND GAMMA RASY COMPRISING STRONTIUM SULFATE HAVING AN ALKALI METAL SULFATE DIFFUSED IN THE CRYSTAL LATTICE THEREOF.
Claim 2
Dependent Claim
30 words
A RADIATION SENSITIVE MATERIAL CAPABLE OF DEVELOPING COLOR THEREIN ON EXPOSURE TO X-RAYS AND GAMMA RASY COMPRISING STRONTIUM SULFATE HAVING AN ALKALI METAL SULFATE DIFFUSED IN THE CRYSTAL LATTICE THEREOF.
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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |