US2690056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion process and apparatus
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-03-09
•
Granted: 1954-09-28
•
Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Eric V Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/087; B01J8/082; B01J8/12; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00106; B01J2208/00115; B01J2208/00132; B01J2208/00504; B01J2208/0053
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |