US3124471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic patching material for rotatable
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441; C21C5/443; C04; C04B; C04B35/00; C04B35/01; C04B35/013; C04B35/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A BASIC LINING MATERIAL FOR REPAIRING THE REFRACTORY LINING OF ROTARY DRUM FURNACES IN HOT CONDITION, WHICH CONSISTS ESSENTIALLY OF DOLOMITE AND A BONDING SUBSTANCE THE LATTER CONSISTING ESSENTIALLY OF TAR CONTAINING 60 TO 65% PITCH, SAID TAR BEING IN AMOUNT RANGING FROM 5 TO 11% BY WEIGHT OF SAID DOLOMITE, AND HARD PITCH TO THE EXTENT THAT THE TOTAL PITCH CONTENT OF THE LINING MATERIAL IS FROM 7 TO 25% BY WEIGHT OF SAID LINING MATERIAL, SAID LINING MATERIAL BEING IN A GRANULAR FRIABLE CONDITION.
Claim 2
Dependent Claim
86 words
A BASIC LINING MATERIAL FOR REPAIRING THE REFRACTORY LINING OF ROTARY DRUM FURNACES IN HOT CONDITION, WHICH CONSISTS ESSENTIALLY OF DOLOMITE AND A BONDING SUBSTANCE THE LATTER CONSISTING ESSENTIALLY OF TAR CONTAINING 60 TO 65% PITCH, SAID TAR BEING IN AMOUNT RANGING FROM 5 TO 11% BY WEIGHT OF SAID DOLOMITE, AND HARD PITCH TO THE EXTENT THAT THE TOTAL PITCH CONTENT OF THE LINING MATERIAL IS FROM 7 TO 25% BY WEIGHT OF SAID LINING MATERIAL, SAID LINING MATERIAL BEING IN A GRANULAR FRIABLE CONDITION.
References Cited (Backward Citations)
US2653878A
Cited
US2943240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |