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US2626871A
Expired / Lapsed
US
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Chemically bonded carbon refractory
Assignee: Gladding Mcbean and Co
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Filing: 1949-11-14
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Granted: 1953-01-27
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 William K Zinszer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:20
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A METHOD OF MAKING AN UNBURNED, COMPRESSED AND FORMED REFRACTORY RESISTANT TO THE ACTION OF MOLTEN METAL AND SLAGS COMPRISING: BLENDING 25%-95%, BY WEIGHT, OF GRANULAR COKE WITH 75%-5%, BY WEIGHT, OF A REFRACTORY CLAY AND INTRODUCING INTO THE MIXTURE AQUEOUS SOLUTIONS OF ALUMINUM CHLORIDE AND AN INORGANIC, WATERSOLUBLE REAGENT CONTAINING A PHOSPHORIC ACID RADICAL, SAID SOLUTIONS BEING ADAPTED TO COMBINE AND FORM A REFRACTORY, BONDING AGENT AND A VOLATILIZABLE BY-PRODUCT, SAID BONDING AGENT BEING ALUMINUM PHOSPHATE; MOLDING THE MIXTURE INTO DESIRED SHAPE AND DRYING THE MOLDED SHAPE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |