Patent US1106826A successfully refreshed from Google Patents.
Patent US3669703A successfully refreshed from Google Patents.
US3669703A
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US
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Process for the treatment of fly ash and product
Assignee: Enercon International Ltd
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Filing: 1970-05-05
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Granted: 1972-06-13
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Expires: 1990-05-05
Abstract
Abstract A PROCESS FOR TREATING FLY ASH TO OBTAIN A MULTIPLICITY OF VALUABLE PRODUCTS INCLUDING A QUALITY CONTROLLED SINTERED AGGREGATE PRODUCT, AN IRON CONCENTRATE PRODUCT, AN IMPROVED POZZOLAN PRODUCT, AND A CARBON PRODUCT WHICH INCLUDES THE STEP OF AIR CLASSIFICATION OF FLY ASH OR A FLY ASH FRACTION.
Inventors
- 👤 John T Pennachetti
- 👤 Joseph F Boux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:24
CPC Classifications
C; C04; C04B; C04B18/00; C04B18/04; C04B18/06; C04B18/08; C04B18/085; B; B03; B03B; B03B9/00; B03B9/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |