US2842447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a refractory body and article made thereby
Assignee: Corning Glass Works
•
Filing: 1955-09-29
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Granted: 1958-07-08
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Leon R Schlotzhauer
- 👤 Kenneth T Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE METHOD OF MAKING A HIGHLY REFRACTORY AND CORROSION RESISTANT BODY WHICH COMPRISES MAKING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF FINELY DIVIDED ZIRCON AND FINELY DIVIDED ALUMINA IN SUBSTANTIALLY THE STOICHIOMETRIC PROPORTIONS OF THE EQUATION
Claim 2
Independent Claim
35 words
THE METHOD OF MAKING A HIGHLY REFRACTORY AND CORROSION RESISTANT BODY WHICH COMPRISES MAKING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF FINELY DIVIDED ZIRCON AND FINELY DIVIDED ALUMINA IN SUBSTANTIALLY THE STOICHIOMETRIC PROPORTIONS OF THE EQUATION
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |