US3437562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing combined coal char and oil coke and coproducts therewith
Assignee: ALAMJIT D SINGH
•
Filing: 1964-12-03
•
Granted: 1969-04-08
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 Alamjit D Singh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:04
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/16; C10B49/20; C10B49/22; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; Y; Y10; Y10S; Y10S208/00; Y10S208/951
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |