Patent US4144749A successfully refreshed from Google Patents.
Patent US3133887A successfully refreshed from Google Patents.
US3133887A
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Neutron shields and methods of manufacturing them
Assignee: Saint Gobain Abrasives Inc
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Filing: 1958-10-06
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Granted: 1964-05-19
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Richard A Alliegro
- 👤 Torstan W Ekberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:40
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/02; G21F1/10; G21F1/103; C; C08; C08K; C08K3/00; C08K3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PRESSURE MOLDED AND SHAPED NEUTRON SHIELD IN SOLID FORM ADAPTED TO BE MACHINED CONSISTING ESSENTIALLY OF FROM 5% TO 95% BY WEIGHT OF PARTICLES OF BORON CARBIDE DISPERSED IN A CURED EPOXY RESIN, SAID BORON CARBIDE PARTICLES BEING SIZED TO BE NO LARGER TNA 20 MESH, AND SAID PARTICULATE BORON CARBIDE BEING PRESENT IN A DISTRIBUTION OF VARIOUSLY SIZED PARTICLES.
Claim 2
Dependent Claim
61 words
A PRESSURE MOLDED AND SHAPED NEUTRON SHIELD IN SOLID FORM ADAPTED TO BE MACHINED CONSISTING ESSENTIALLY OF FROM 5% TO 95% BY WEIGHT OF PARTICLES OF BORON CARBIDE DISPERSED IN A CURED EPOXY RESIN, SAID BORON CARBIDE PARTICLES BEING SIZED TO BE NO LARGER TNA 20 MESH, AND SAID PARTICULATE BORON CARBIDE BEING PRESENT IN A DISTRIBUTION OF VARIOUSLY SIZED PARTICLES.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |