US3434933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing high yield coke by downdrafting of hot gases
Assignee: Peabody Development Co
•
Filing: 1966-08-05
•
Granted: 1969-03-25
•
Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 Vaughn Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2809154A
Cited
US3013951A
Cited
US2997426A
Cited
US3146175A
Cited
US3167487A
Cited
US3325395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |