US3283156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear radiation shielding window
Assignee: PPG Industries Inc
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Filing: 1963-03-12
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Granted: 1966-11-01
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Mazza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
G; G21; G21F; G21F7/00; G21F7/02; G21F7/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A RADIATION SHIELDING WINDOW COMPRISING MOUNTING MEANS AND A SLAB OF GLASS OF FROM 4 TO ABOUT 10 INCHES THICK, SAID GLASS HAVING A VOLUME RESISTIVITY OF LESS THAN ABOUT 1011 OHM-CENTIMETERS AT A TEMPERATURE OF 100* CENTIGRADE AND CONTAINING CERIUM OXIDE IN AN AMOUNT SUFFICIENT TO RESIST BROWNING OF THE GLASS WHEN EXPOSED TO HIGH
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |