Patent US3239669A successfully refreshed from Google Patents.
US3239669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible shield for ionizing radiations
Assignee: Gentex Corp
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Filing: 1960-11-25
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Granted: 1966-03-08
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Jan V Weinberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:43
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/02; G21F1/10; G21F1/12; G21F1/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A FLEXIBLE MATERIAL FOR ARRESTING IONIZING RADIATIONS INCLUDING IN COMBINATION A LAYER COMPRISING A MAJOR AMOUNT OF POWERED LEAD AND A MINOR AMOUNT OF SILICONE RUBBER FORMING A COHESIVE MASS AND A LESSER AMOUNT OF FIBER FLOCK DISPOSED THROUGHOUT SAID LAYER.
Claim 2
Dependent Claim
41 words
A FLEXIBLE MATERIAL FOR ARRESTING IONIZING RADIATIONS INCLUDING IN COMBINATION A LAYER COMPRISING A MAJOR AMOUNT OF POWERED LEAD AND A MINOR AMOUNT OF SILICONE RUBBER FORMING A COHESIVE MASS AND A LESSER AMOUNT OF FIBER FLOCK DISPOSED THROUGHOUT SAID LAYER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |