US3141783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory lining
Assignee: Harbison Walker Refractories Co
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Filing: 1962-04-27
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Granted: 1964-07-21
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Weaver Ernest Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:23
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; Y; Y10; Y10S; Y10S264/00; Y10S264/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN UNCONSOLIDATED BASIC REFRACTORY RAMMING MIXES BONDED WITH SELECTED CARBONACEOUS BOND MATERIALS, WHICH MIXES CONSIST ESSENTIALLY OF ABOUT 100 PARTS OF BASIC REFRACTORY AND UP TO ABOUT 8 PARTS, BY WEIGHT, OF THE BOND MATERIAL, THE IMPROVEMENT CONSISTING ESSENTIALLY OF SAID BOND MATERIAL INCLUDING A COMPATIBLE HYDROGENATED LONG CHAIN HYDROCARBON ESTER IN A QUANTITY SUFFICIENT TO MAINTAIN FLUIDITY AND WORKABLILITY IN THE MIXES AT AMBIENT TEMPERATURE CONDITIONS.
Claim 2
Dependent Claim
67 words
IN UNCONSOLIDATED BASIC REFRACTORY RAMMING MIXES BONDED WITH SELECTED CARBONACEOUS BOND MATERIALS, WHICH MIXES CONSIST ESSENTIALLY OF ABOUT 100 PARTS OF BASIC REFRACTORY AND UP TO ABOUT 8 PARTS, BY WEIGHT, OF THE BOND MATERIAL, THE IMPROVEMENT CONSISTING ESSENTIALLY OF SAID BOND MATERIAL INCLUDING A COMPATIBLE HYDROGENATED LONG CHAIN HYDROCARBON ESTER IN A QUANTITY SUFFICIENT TO MAINTAIN FLUIDITY AND WORKABLILITY IN THE MIXES AT AMBIENT TEMPERATURE CONDITIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |