Patent US2898331A successfully refreshed from Google Patents.
US2898331A
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Lubricants
Assignee: Sinclair Refining Co
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Filing: 1958-02-27
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Granted: 1959-08-04
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Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Dorinson Amos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:34
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M2219/00; C10M2219/02; C10M2219/024; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A SULFUR-CHLORINATED OIL-SOLUBLE ESTER OF CHLORENDIC ACID PRODUCED BY REACTING A SULFUR CHLORIDE AND AN OILSOLUBLE CHLORENDIC ACID ESTER IN A RATIO OF ABOUT .5 TO 2 MOLES OF SULFUR CHLORIDE TO 1 MOLE OF A CHLORENDIC ACID ESTER WHEREIN SAID ESTER GROUP IS AN UNSATURATED ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 3 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
56 words
A SULFUR-CHLORINATED OIL-SOLUBLE ESTER OF CHLORENDIC ACID PRODUCED BY REACTING A SULFUR CHLORIDE AND AN OILSOLUBLE CHLORENDIC ACID ESTER IN A RATIO OF ABOUT .5 TO 2 MOLES OF SULFUR CHLORIDE TO 1 MOLE OF A CHLORENDIC ACID ESTER WHEREIN SAID ESTER GROUP IS AN UNSATURATED ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 3 TO 20 CARBON ATOMS.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |