Process for the manufacture of foamed porcelain-like shaped articles
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF FOAMED PROCELAIN-LIKE SHAPED ARTICLES WHICH COMPRISES MIXING (A) AT LEAST ONE AGGREGATE COMPONENT SELECTED FROM THE GROUP CONSISTING OF THE SILICATE GLASS POWDERS AND SILICATE MINERAL POWDERS; (B) A WATER GLASS COMPONENT; (C) AN INORGANIC ALKALI SALT COMPONENT WHICH GENERATES A GAS BY SUBSTANTIALLY DECOMPOSING AT THE FIRING TEMPERATURE; AND (D) A COMPONENT FOR ADJUSTING THE FOAMING TEMPERATURE, SAID COMPONENT BEING SELECTED FROM AT LEAST ONE MINERAL POWDER SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, BORATES, LEAD OXIDES AND ZINC WHITE, AND AT LEAST ONE MINERAL POWDER SELECTED FROM THE GROUP CONSISTING OF THE ALUMIN COMPOUNDS, MAGNESIA COMPOUNDS AND CALCIUM COMPOUNDS; MOLDING THE RESULTING MIXTURE; AND THEREAFTER FIRING AND FOAMING THE RESULTING SHAPED ARTICLE AT A TEMPERATURE RANGING BETWEEN 700* AND 1200*C.
Inventors
- 👤 O Sato
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |