US3732177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exothermic insulating compositions comprising glass polishing residue
Assignee: Union Commerce Bank
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Filing: 1970-03-27
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Granted: 1973-05-08
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Expires: 1990-03-27
Abstract
Abstract EXOTHERMIC INSULATING COMPOUND FOR USE IN THE CASTING OF METALLS COMPRISING 50-82% FINELY DIVIDED EFACTORY MATERIAL COMPRISING AT LEAST ABOUT 10% GLASS POLISHING RESIDUE, 0 TO 72% SAND, 0 TO 20% SILICA FLOUR, AND 0 TO 20% DIATOMACEOUS EARTH, 4-12% ASBESTOS FIBER, UP TO 12% CELLULOSIC MATERIAL, UP TO 12% REACTIVE METAL, UP TO 14% METAL OXIDE, AND 3-12% BINDER RESIN.
Inventors
- 👤 N Tisdale
- 👤 J Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:15
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10; B22D7/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |