Patent US3826665A successfully refreshed from Google Patents.
US3826665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Setting and hardening of aluminous cement
Assignee: Rhone Progil SA
•
Filing: 1973-03-06
•
Granted: 1974-07-30
•
Expires: 1993-03-06
Abstract
Abstract THE INCLUSION OF A COMPOSITION COMPRISED OF (1) LITHIA OR A WATER-SOLUBLE LITHIUM SALT AND (2) A HYDROXYLATED ORGANIC ACID, OR A SALT OR ESTER THEREOF, ACCELERATES THE SETTING AND HARDENING TIMES F ALUMINOUS CEMENT AND PROVIDES MORTARS, CONCRETES, GROUTS, ETC., DERIVED FROM SUCH MODIFIED HIGH ALUMINA TYPE CEMENTS WHEREIN THE SUPERIOR MECHANICAL AND HANDLING PROPERTIES GENERALLY CHARACTERISTIC OF ALUMINOUS CEMENT ARE NOT APPRECIABLY AFFECTED.
Inventors
- 👤 C Hovasse
- 👤 P Allemand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:04
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/06; C04B22/00; C04B22/06; C04B22/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |