Patent US2618602A successfully refreshed from Google Patents.
US2618602A
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Lubricating composition of low pour point
Assignee: Standard Oil Development Co
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Filing: 1949-12-17
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Granted: 1952-11-18
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Expires: 1969-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jeffrey H Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:34
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/16; C10M159/00; C10M159/005; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2213/00; C10M2213/04; C10M2213/06; C10M2217/00; C10M2217/02; C10M2217/026; C10M2217/04; C10M2221/00; C10M2221/02; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL BASE STOCK AND A MINOR PROPORTION OF POLYMERIZED DI-ALKYL FUMAROID ACID ESTER OF A SATURATED ALIPHATIC ALCOHOL OF 12 TO 14 CARBON
Claim 2
Dependent Claim
31 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL BASE STOCK AND A MINOR PROPORTION OF POLYMERIZED DI-ALKYL FUMAROID ACID ESTER OF A SATURATED ALIPHATIC ALCOHOL OF 12 TO 14 CARBON
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |