US2676150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors for lubricating oils
Assignee: Wyeth Holdings LLC
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Filing: 1952-04-09
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Granted: 1954-04-20
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Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Gerard A Loughran
- 👤 Edwin O Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:17
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/32; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2219/00; C10M2219/09; C10M2223/00; C10M2223/08; C10N; C10N2010/00; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A HYDROCARBON OIL COMPOSITION COMPRISING A RELATIVELY LARGE PROPORTION OF A HYDROCARBON LUBRICATING OIL HAVING DISSOLVED THEREIN A RELATIVELY SMALL AMOUNT, SUFFICIENT TO REDUCE THE CORROSIVE EFFECT OF SAID COMPOSITION ON METALLIC ELEMENTS, OF AND OIL-SOLUBLE COMPOUND OF THE GROUP CONSISTING OF N,S-SUBSTITUTED DITHIOAMMELIDES AND THIOAMMELINES, RESPECTIVELY HAVING THE FOLLOWING STRUCTURAL FORMULAE
Claim 2
Dependent Claim
52 words
A HYDROCARBON OIL COMPOSITION COMPRISING A RELATIVELY LARGE PROPORTION OF A HYDROCARBON LUBRICATING OIL HAVING DISSOLVED THEREIN A RELATIVELY SMALL AMOUNT, SUFFICIENT TO REDUCE THE CORROSIVE EFFECT OF SAID COMPOSITION ON METALLIC ELEMENTS, OF AND OIL-SOLUBLE COMPOUND OF THE GROUP CONSISTING OF N,S-SUBSTITUTED DITHIOAMMELIDES AND THIOAMMELINES, RESPECTIVELY HAVING THE FOLLOWING STRUCTURAL FORMULAE
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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |