US3333971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory composition
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1965-12-29
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Granted: 1967-08-01
•
Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Mckenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:58
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/42; C04B35/03; C04B35/04; C04B35/043; C04B35/0435; C04B35/12; C04B35/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A REFRACTORY BONDING COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST SUFFICIENT AL2O3-YIELDING MATERIAL TO YIELD 12% BY WEIGHT AL2O3 AND AT LEAST SUFFICIENT MGO-YIELDING MATERIAL TO YIELD SUFFICIENT MGO TO FORM MAGNESIUM ALUMINATE SPINEL AND A COMPOUND WHICH WILL YIELD, UPON HEATING TO AT LEAST 1,000*C., FROM 3% TO 15% BY WEIGHT OF THE TOTAL BONDING COMPOSITION OF ZRO2.
Claim 2
Dependent Claim
58 words
A REFRACTORY BONDING COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST SUFFICIENT AL2O3-YIELDING MATERIAL TO YIELD 12% BY WEIGHT AL2O3 AND AT LEAST SUFFICIENT MGO-YIELDING MATERIAL TO YIELD SUFFICIENT MGO TO FORM MAGNESIUM ALUMINATE SPINEL AND A COMPOUND WHICH WILL YIELD, UPON HEATING TO AT LEAST 1,000*C., FROM 3% TO 15% BY WEIGHT OF THE TOTAL BONDING COMPOSITION OF ZRO2.
References Cited (Backward Citations)
US2695242A
Cited
US3184322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |