Patent US2504903A successfully refreshed from Google Patents.
US2965504A
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Process for preparation of refractory insulating blocks
Assignee: Unilever Bestfoods North America
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Filing: 1958-04-01
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Granted: 1960-12-20
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Charles J Gogek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:22
CPC Classifications
C; C04; C04B; C04B12/00; C04B26/00; C04B26/02; C04B26/28; C04B28/00; C04B28/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PREPARING A REFRACTORY INSULATING BLOCK WHICH COMPRISES SLURRYING 100 PARTS OF REFRACTORY MATERIALS CONSISTING ESSENTIALLY OF ROCK WOOL AND A SUGARAMMONIUM SULFATE BINDER, IN ABOUT 600 TO 1000 PARTS OF WATER, FILTERING THE LURRY AND SHAPING TO SOLID MATERIAL INTO BLOCK FORM AND BAKING THE SAME AT ABOUT 300*F. TO ABOUT 500*F., THE AMOUNT OF SUGAR-AMMONIUM SULFATE BINDER BEINS SUFFICIENT TO PROVIDE 0.5 TO 6 PARTS OF BINDER, DRY BASIS, IN THE FILTERED BLOCK, THE AMOUNT OF AMMONIUM SULFATE IN THE SUGAR-AMMONIUM SULFATE BINDER BEING 1 TO 15 PERCENT, DRY BASIS.
Claim 2
Independent Claim
94 words
A METHOD OF PREPARING A REFRACTORY INSULATING BLOCK WHICH COMPRISES SLURRYING 100 PARTS OF REFRACTORY MATERIALS CONSISTING ESSENTIALLY OF ROCK WOOL AND A SUGARAMMONIUM SULFATE BINDER, IN ABOUT 600 TO 1000 PARTS OF WATER, FILTERING THE LURRY AND SHAPING TO SOLID MATERIAL INTO BLOCK FORM AND BAKING THE SAME AT ABOUT 300*F. TO ABOUT 500*F., THE AMOUNT OF SUGAR-AMMONIUM SULFATE BINDER BEINS SUFFICIENT TO PROVIDE 0.5 TO 6 PARTS OF BINDER, DRY BASIS, IN THE FILTERED BLOCK, THE AMOUNT OF AMMONIUM SULFATE IN THE SUGAR-AMMONIUM SULFATE BINDER BEING 1 TO 15 PERCENT, DRY BASIS.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |