US3094424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered refractory material
Assignee: Babcock and Wilcox Co
•
Filing: 1960-08-02
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Granted: 1963-06-18
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Expires: 1980-08-02
Abstract
No abstract record available.
Inventors
- 👤 Temple W Ratcliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:10
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; B; B22; B22D; B22D11/00; B22D11/10; B22D41/00; B22D41/50; B22D41/52; B22D41/54; C; C04; C04B; C04B35/00; C04B35/01; C04B35/12; C04B35/42; C04B35/44; E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0461; F27D1/00; F27D1/0003; F27D1/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A SINTERED REFRACTORY POURING NOZZLE FOR MOLTEN METAL COMPRISING A CHROME-MAGNESITE MIX COMBINED WITH A BONDING AGENT AND WATER, SAID MIX BEING MOLDED AT A PRESSURE IN EXCESS OF 1000 P.S.I. TO FORM A POURING NOZZLE AND FIRED TO A TEMPERATURE OF NOT LESS THAN 2700 TO 2750*F., SAID CHROME-MAGNESITE MIX ANALYTICALLY CONTAINING 3.6 TO 7.5% FEO; 4.0% AL2O3; 9.3 TO 15.0% CR2O3; 50 TO 70% MGO WITH THE SUM OF FEO, AL203, CR2O3 AND MGO BEING AT LEAST 70%, AND INCLUDING NO MORE THAN 11.0% CAO, 8.6% FE2O3 AND 8.7% SIO2.
Claim 2
Dependent Claim
92 words
A SINTERED REFRACTORY POURING NOZZLE FOR MOLTEN METAL COMPRISING A CHROME-MAGNESITE MIX COMBINED WITH A BONDING AGENT AND WATER, SAID MIX BEING MOLDED AT A PRESSURE IN EXCESS OF 1000 P.S.I. TO FORM A POURING NOZZLE AND FIRED TO A TEMPERATURE OF NOT LESS THAN 2700 TO 2750*F., SAID CHROME-MAGNESITE MIX ANALYTICALLY CONTAINING 3.6 TO 7.5% FEO; 4.0% AL2O3; 9.3 TO 15.0% CR2O3; 50 TO 70% MGO WITH THE SUM OF FEO, AL203, CR2O3 AND MGO BEING AT LEAST 70%, AND INCLUDING NO MORE THAN 11.0% CAO, 8.6% FE2O3 AND 8.7% SIO2.
References Cited (Backward Citations)
US2068641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |