US2307741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water ratio reducing and workability increasing compositions for concrete and other hydraulic mixes
Assignee: L SONNEBORN SONS Inc
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Filing: 1941-09-12
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Granted: 1943-01-12
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Expires: 1961-09-12
Abstract
No abstract record available.
Inventors
- 👤 Goldstein Herbert
- 👤 Liberthson Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:29
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1018; C04B20/1029; C04B20/1037; C04B24/00; C04B24/24; C04B24/28; C04B24/32; C04B2103/00; C04B2103/30; C04B2103/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |