US2448334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolytic conversion of hydrocarbons
Assignee: Sinclair Refining Co
•
Filing: 1947-06-27
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Granted: 1948-08-31
•
Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Watson Kenneth Merle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:11
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/38; B01J8/384; B01J8/386
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2317379A
Cited
US2344449A
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US2378342A
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US2376365A
Cited
US2417393A
Cited
US2418679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |