Patent US3416778A successfully refreshed from Google Patents.
US3416778A
Expired / Lapsed
US
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Apparatus for thermal treatment of minerals
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1967-03-29
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Granted: 1968-12-17
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Expires: 1987-03-29
Abstract
No abstract record available.
Inventors
- 👤 Chabaglian Henri Fernand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:59
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2413; F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2066; F27D; F27D15/00; F27D15/02; F27D15/0206; F27D15/0266
Claims Analysis
Total Claims: 0
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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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |