US3261696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconia based foam insulating material and method
Assignee: Aeronca Manufacturing Corp
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Filing: 1964-10-27
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Granted: 1966-07-19
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Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Wiegert
- 👤 Thomas J Byrne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:53
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C04B28/342; C04B35/00; C04B35/01; C04B35/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD WHICH COMPRISES, PREPARING A MIXTURE WHICH CONSISTS ESSENTIALLY OF ABOUT 76-80 PARTS PER HUNDRED BY WEIGHT OF CASTABLE ZIRCONIA, ABOUT 7.5-10.0 PARTS CALCINED GRANULAR ALUMINA, AND PATT POWDERED ALUMINUM METAL, ADDING TO SAID MIXTURE A PHOSPHORIC ACID SOLUTION CORRESPONDING TO ABOUT 8.0-10.0 PARTS PHOSPHORIC ACID IN 85% AQUEOUS SOLUTION AND ABOUT 3.1-5.0 PARTS ADDITIONAL WATER, THEREBY PRODUCING A FOAMING REACTION IN WHICH WATER VAPOR AND HYDROGEN ARE EVOLVED WHICH IMPART A CELLULAR STRUCTURE TO THE REACTION MASS, PERMITTING THE REACTION MASS TO STABILIZE ITSELF AT ROOM TEMPERTURE FOR AT LEAST ABOUT ONE HOUR, AND THEREAFTER HARDENING THE RESULTANT PRODUCT AT A TEMPERATURE IN THE RANGE OF ABOUT 150-800*F. FOR A PERIOD OF HOURS.
Claim 2
Independent Claim
115 words
THE METHOD WHICH COMPRISES, PREPARING A MIXTURE WHICH CONSISTS ESSENTIALLY OF ABOUT 76-80 PARTS PER HUNDRED BY WEIGHT OF CASTABLE ZIRCONIA, ABOUT 7.5-10.0 PARTS CALCINED GRANULAR ALUMINA, AND PATT POWDERED ALUMINUM METAL, ADDING TO SAID MIXTURE A PHOSPHORIC ACID SOLUTION CORRESPONDING TO ABOUT 8.0-10.0 PARTS PHOSPHORIC ACID IN 85% AQUEOUS SOLUTION AND ABOUT 3.1-5.0 PARTS ADDITIONAL WATER, THEREBY PRODUCING A FOAMING REACTION IN WHICH WATER VAPOR AND HYDROGEN ARE EVOLVED WHICH IMPART A CELLULAR STRUCTURE TO THE REACTION MASS, PERMITTING THE REACTION MASS TO STABILIZE ITSELF AT ROOM TEMPERTURE FOR AT LEAST ABOUT ONE HOUR, AND THEREAFTER HARDENING THE RESULTANT PRODUCT AT A TEMPERATURE IN THE RANGE OF ABOUT 150-800*F. FOR A PERIOD OF HOURS.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |