US3020147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the heat hardening of pellets composed of ores on sintering grates
Assignee: GEA Group AG
•
Filing: 1960-02-15
•
Granted: 1962-02-06
•
Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Boss Karl-Heinz
- 👤 Rausch Hans
- 👤 Meyer Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:29
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA566145A
Cited
GB229608A
Cited
US2191911A
Cited
US2380056A
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US2672412A
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GB750518A
Cited
US2750273A
Cited
US2789895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |