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Patent US1928494A successfully refreshed from Google Patents.
US1928494A
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Apparatus for the conversion of hydrocarbon oils
Assignee: ExxonMobil Oil Corp
•
Filing: 1928-05-03
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Granted: 1933-09-26
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Expires: 1948-05-03
Abstract
No abstract record available.
Inventors
- 👤 Ray R Irwin
- 👤 Emery C Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/06; C10G9/38
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) | 1936-09-25 | 1937-03-27 | 1937-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-25 | 1941-03-27 | 1941-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-25 | 1945-03-27 | 1945-09-26 | $7700.00 | Window Closed / Lapsed |