US2928948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar ray resistant materials
Assignee: Individual
•
Filing: 1955-05-23
•
Granted: 1960-03-15
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Herman I Silversher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:23
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/12; G21F1/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN INTEGRATED LAMINOUS SHIELDING MATERIAL COMPRISING A FIRST LAYER OF RAY-BLOCKING METAL OF THE GROUP CONSISTING OF LEAD, URANIUM, THORIUM AND THALLIUM, AND A SECOND LAYER COMPRISING AN ORGANIC RESIN CARRYING A UNIFORMERLY DISTRIBUTED NEUTRON ABSORBENT OF THE GROUP CONSISTING OF BORON, CADMIUM AND AN INORGANIC COMPOUND OF BORON, CADMIUM AND LITHIUM.
Claim 2
Dependent Claim
52 words
AN INTEGRATED LAMINOUS SHIELDING MATERIAL COMPRISING A FIRST LAYER OF RAY-BLOCKING METAL OF THE GROUP CONSISTING OF LEAD, URANIUM, THORIUM AND THALLIUM, AND A SECOND LAYER COMPRISING AN ORGANIC RESIN CARRYING A UNIFORMERLY DISTRIBUTED NEUTRON ABSORBENT OF THE GROUP CONSISTING OF BORON, CADMIUM AND AN INORGANIC COMPOUND OF BORON, CADMIUM AND LITHIUM.
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Cited
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Cited
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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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |