US3238148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding concrete and aggregates
Assignee: Osborne Associates
•
Filing: 1962-04-02
•
Granted: 1966-03-01
•
Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Philip S Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:24
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B22/00; C04B22/0013; G; G21; G21C; G21C11/00; G21C11/02; G21C11/028; G21F; G21F1/00; G21F1/02; G21F1/04; G21F1/042; G21F1/045; G21F1/047; G21K; G21K5/00; G21K5/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A HIGH STRENGTH CONCRETE ADAPTED TO SHIELD AGAINST NEUTRONS AND GAMMA RADIATION OVER A WIDE ENERGY SPECTRUM CONSISTING ESSENTIALLY OF A STRUCTURAL CEMENT AND AN AGGREGATE COMPRISING SINTERED, STRONG, ROCK-LIKE MASSES CONTAINING BETWEEN ABOUT 1% TO 70% LEAD BY WEIGHT IN THE FORM OF LEAD OXIDE AND ABOUT 1% TO 18% BORON BY WEIGHT IN THE FORM OF BORON OXIDE, SAID AGGREGATE BEING SUBSTANTIALLY INSOLUBLE IN THE ALKALINE COMPONENTS OF SAID CEMENT.
Claim 2
Dependent Claim
72 words
A HIGH STRENGTH CONCRETE ADAPTED TO SHIELD AGAINST NEUTRONS AND GAMMA RADIATION OVER A WIDE ENERGY SPECTRUM CONSISTING ESSENTIALLY OF A STRUCTURAL CEMENT AND AN AGGREGATE COMPRISING SINTERED, STRONG, ROCK-LIKE MASSES CONTAINING BETWEEN ABOUT 1% TO 70% LEAD BY WEIGHT IN THE FORM OF LEAD OXIDE AND ABOUT 1% TO 18% BORON BY WEIGHT IN THE FORM OF BORON OXIDE, SAID AGGREGATE BEING SUBSTANTIALLY INSOLUBLE IN THE ALKALINE COMPONENTS OF SAID CEMENT.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |