Patent FR1090759A successfully refreshed from Google Patents.
US2354355A
Expired / Lapsed
US
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Conversion of hydrocarbons
Assignee: ExxonMobil Oil Corp
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Filing: 1941-10-22
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Granted: 1944-07-25
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Expires: 1961-10-22
Abstract
No abstract record available.
Inventors
- 👤 Armand J Abrams
- 👤 Irving H Welinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:18
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0285; C; C10; C10G; C10G35/00; C10G35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-07-25 | 1948-01-24 | 1948-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-25 | 1952-01-24 | 1952-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-25 | 1956-01-24 | 1956-07-25 | $7700.00 | Window Closed / Lapsed |