US2660562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants
Assignee: Phillips Petroleum Co
•
Filing: 1951-03-26
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Granted: 1953-11-24
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Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 William N Axe
- 👤 William B Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:29
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A LUBRICATING OIL CONTAINING IN SOLUTION FROM 0.1 TO 25 WEIGHT PER CENT OF AN OIL-SOLUBLE GUANIDINE SALT, OF AN ORGANIC SULFONIC ACID, SELECTED FROM THE GROUP CONSISTING OF A SYNTHETIC ALKYL ARYL SULFONIC ACID AND A PETROLEUM SULFONIC ACID.
Claim 2
Dependent Claim
40 words
A LUBRICATING OIL CONTAINING IN SOLUTION FROM 0.1 TO 25 WEIGHT PER CENT OF AN OIL-SOLUBLE GUANIDINE SALT, OF AN ORGANIC SULFONIC ACID, SELECTED FROM THE GROUP CONSISTING OF A SYNTHETIC ALKYL ARYL SULFONIC ACID AND A PETROLEUM SULFONIC ACID.
Claim 3
Dependent Claim
18 words
AS A NEW CLASS OF COMPOSITIONS, GUANIDINE PETROLEUM SULFONATES CONTAINING MORE THAN 20 CARBON ATOMS IN THE MOLECULE.
Claim 4
Dependent Claim
18 words
AS A NEW CLASS OF COMPOSITIONS, GUANIDINE PETROLEUM SULFONATES CONTAINING MORE THAN 20 CARBON ATOMS IN THE MOLECULE.
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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |