Patent US3556947A successfully refreshed from Google Patents.
US3556947A
Expired / Lapsed
US
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Method for regulating the heating of coke ovens
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1968-09-16
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Granted: 1971-01-19
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Expires: 1988-09-16
Abstract
Abstract INSTRUMENTS MEASURE THE TEMPERATURE OF THE FLUE GASES AT SELECTED POINTS AND, FROM A MAXIMUM READING, CONTROL OF THE TOTAL HEAT SUPPLIED TO THE COKE OVEN FLUES IS AUTOMATICALLY EFFECTED BY A WOBBE INDEX OR CALORIFIC VALUE CONTROLLER, OR OTHER GAS FLOW REGULATING DEVICE.
Inventors
- 👤 Ernst Kumper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:53
CPC Classifications
C; C10; C10B; C10B21/00; C10B21/10
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |