US3371049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of zinc halide catalyst used in hydrocracking of polynuclear hydrocarbons
Assignee: Consolidation Coal Co
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Filing: 1965-11-15
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Granted: 1968-02-27
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Gorin Everett
- 👤 Robert T Struck
- 👤 Clyde W Zielke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:43
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/08; B; B01; B01J; B01J27/00; B01J27/06; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |