US2818345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory cement
Assignee: Thermal Syndicate Ltd
•
Filing: 1954-07-20
•
Granted: 1957-12-31
•
Expires: 1974-07-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur Eric J Vickers
- 👤 John B Maloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:47
CPC Classifications
C; C04; C04B; C04B28/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
A NEW COMPOSITION OF MATTER ADAPTED TO BE USED AS A REFRACTORY CEMENT, SAID COMPOSITION CONSISTING ESSENTIALLY OF A REFRACTORY AGGREGATE SELECTED FROM THE GROUP CONSISTING OF ALUMINA, SILLIMANITE, ZIRCONIA, ZIRCON, MAGNESIA, ALUMINO-SILICATES, AND MAGNESIA-ALUMINO-SILLICATES, AND 2-12% BY WEIGHT OF ALUMINUM CHLOROHYDRATE AS BINDER.
References Cited (Backward Citations)
US1908792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |