US2948947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing reinforced lightweight concrete
Assignee: Casius Corp Ltd
•
Filing: 1955-11-10
•
Granted: 1960-08-16
•
Expires: 1975-11-10
Abstract
No abstract record available.
Inventors
- 👤 Berg John Valter
- 👤 Stare Carl Gustav Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:38
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; B; B28; B28B; B28B1/00; B28B1/50; Y; Y10; Y10S; Y10S264/00; Y10S264/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732607A
Cited
US1690474A
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US1804753A
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US2038034A
Cited
GB445628A
Cited
US2175895A
Cited
GB492280A
Cited
US2301062A
Cited
US2425883A
Cited
US2522116A
Cited
US2892498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |