Patent US4603385A successfully refreshed from Google Patents.
Patent US1855486A successfully refreshed from Google Patents.
US1855486A
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Treatment of hydrocarbon oils
Assignee: Universal Oil Products Co
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Filing: 1931-01-29
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Granted: 1932-04-26
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Expires: 1951-01-29
Abstract
No abstract record available.
Inventors
- 👤 Jacque C Morrell
- 👤 Egloff Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06; C10G27/00; C10G27/04
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) | 1935-04-26 | 1935-10-26 | 1936-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-26 | 1939-10-26 | 1940-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-26 | 1943-10-26 | 1944-04-26 | $7700.00 | Window Closed / Lapsed |