Method of producing lightweight shaped articles containing perlite or vermiculite
Abstract
Abstract SHAPED ARTICLES FOR CONSTRUCTION OR INSULATION COMPRISING EXPANDED PERLITE, VERMICULITE OR A MIXTURE THEREOF, COMPOUNDED BY A QUASI-COLLOIDAL BINDING AGENT MADE UP FROM SILICATE HYDRATE, CALCIUM ALUMINOSILICATE HYDRATE, AND CALCIUM ALUMINATE HYDRATE PRODUCED BY THE REACTION OF CALCIUM OXIDE OR DRY HYDRATED CALCIUM OXIDE WITH FINELY DIVIDED PERLITE, THE SHAPED ARTICLE CONTAINING 15 TO 40% BY WEIGHT OF THE BINDER BASED ON THE SOLIDS CONTENT THEREOF. THE BINDER IS ALSO USEFUL FOR MAKING OTHER PRODUCTS, FOR INSTANCE, LAMINATES WHICH HAVE A CORE SHEET OF THE SHAPED ARTICLE AND ONE OR MORE COVER SHEETS OF PLASTIC, PAPER, OR OTHER DESIRED MATERIAL. THE INVENTION ALSO COMPRISES A METHOD OF MAKING THE BINDER AND THE SHAPED ARTICLES.
Inventors
- 👤 Istvan Gebefugi
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |