US2531397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sagger and batch for making the same
Assignee: Federal Mogul Ignition LLC
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Filing: 1947-10-30
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Granted: 1950-11-28
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Expires: 1967-10-30
Abstract
No abstract record available.
Inventors
- 👤 Milton W Caton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:53
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/515; C04B35/56; C04B35/565
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A CERAMIC BATCH FOR MAKING REFRACTORIES SUCH AS SAGGERS WHICH CONSISTS OF APPROXIMATELY 10% CLAY TO FACILITATE MOLDING, 3% TO 20% GRANULAR SILICA, UP TO 17% SILICON CARBIDE, 1/2% TO 2 1/2% OF A MINERALIZER OF THE GROUP CONSISTING OF SODIUM ALUMINATE AND CALCIUM ALUMINATE, AND THE BALANCE OF COMMERCIALLY PURE ALUMINA.
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) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |