Patent US3432398A successfully refreshed from Google Patents.
US3432398A
Expired / Lapsed
US
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Charging coke oven with hot coarsely comminuted coal
Assignee: Krupp Wilputte Corp
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Filing: 1964-07-14
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Granted: 1969-03-11
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
C; C10; C10B; C10B31/00; B; B01; B01J; B01J8/00; B01J8/18; B65; B65G; B65G53/00; B65G53/34; B65G53/58; F; F23; F23K; F23K3/00; F23K2203/00; F23K2203/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US266973A
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US545013A
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US1350337A
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US1597438A
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US1783983A
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US2149056A
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US2794686A
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US3047473A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |