Patent US2518546A successfully refreshed from Google Patents.
US2518546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cracking with hydrogen fluoride catalyst
Assignee: Standard Oil Co
•
Filing: 1946-11-09
•
Granted: 1950-08-15
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hengstebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2322800A
Cited
US2403650A
Cited
US2372338A
Cited
US2405993A
Cited
US2436695A
Cited
US2379368A
Cited
US2378636A
Cited
US2417875A
Cited
US2427009A
Cited
US2388156A
Cited
US2392962A
Cited
US2426273A
Cited
US2434040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |