US3444046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing coke
Assignee: Raymond Kaiser Engineers Inc
•
Filing: 1965-02-04
•
Granted: 1969-05-13
•
Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Earl V Harlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:11
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/02; C10L5/04; C10B; C10B53/00; C10B53/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3172823A
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US2105832A
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US2805189A
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US2861028A
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US3018227A
Cited
US3140985A
Cited
US3337417A
Cited
US3355363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |