Patent US3102037A successfully refreshed from Google Patents.
US3102037A
Expired / Lapsed
US
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Refractory cement composition
Assignee: Aerojet Rocketdyne Inc
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Filing: 1957-12-16
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Granted: 1963-08-27
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert F Kimpel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:43
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A CEMENT COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 25 TO ABOUT 35 PERCENT FINELY DIVIDED ZIRCONIUM OXIDE; FROM ABOUT 25 TO ABOUT 38 PERCENT ALUMINUM OXIDE BUBBLE AGGREGATE; FROM ABOUT 3 TO ABOUT 4 PERCENT SODIUM SILICOFLUORIDE; WITH THE BALANCE BEING SODIUM SILICATE AND WATER.
Claim 2
Dependent Claim
48 words
A CEMENT COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 25 TO ABOUT 35 PERCENT FINELY DIVIDED ZIRCONIUM OXIDE; FROM ABOUT 25 TO ABOUT 38 PERCENT ALUMINUM OXIDE BUBBLE AGGREGATE; FROM ABOUT 3 TO ABOUT 4 PERCENT SODIUM SILICOFLUORIDE; WITH THE BALANCE BEING SODIUM SILICATE AND WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |