US2736660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory composition and method of use
Assignee: International Minerals and Chemical Corp
•
Filing: 1951-07-27
•
Granted: 1956-02-28
•
Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Barlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:28
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
THE METHOD OF REPAIRING FURNACE REFRACTORY LININGS, COMPRISING BLOWING AT HIGH PRESSURE AGAINST THE FURNACE WALLS IN THE REGION OF REPAIR A FLUID COMPOSITION ESSENTIALLY CONSISTING BY WEIGHT OF SOLID INGREDIENTS APPROXIMATELY 47.5% TO 57% COARSE SILICA FRACTION OF ABOUT 1/2 INCH TO 40 MESH, ABOUT 23% TO 37% FINE SILICA FRACTION OF ABOUT 50 TO 300 MESH, AND ABOUT 14% TO 20% REFRACTORY CEMENT; AND TO WHICH THERE IS ADDED ABOUT 12% WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |