US2689828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil compositions
Assignee: Gulf Oil Corp
•
Filing: 1952-06-04
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Granted: 1954-09-21
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Expires: 1972-06-04
Abstract
No abstract record available.
Inventors
- 👤 Herschel G Smith
- 👤 Troy L Cantrell
- 👤 John G Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:01
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A NUMBER OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR AMOUNT, SUFFICIENT TO CONFER CORROSION-INHIBITING PROPERTIES ON THE COMPOSITION, OF AN AMINE SALT OF AN ALIPHATIC HALF ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC AND ALKYL SUBSTITUTED PHTHALIC ACIDS, THE ALIPHATIC RESIDUE OF SAID ESTER CONTAINING AT LEAST 8 CARBON ATOMS.
Claim 2
Dependent Claim
60 words
A NUMBER OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR AMOUNT, SUFFICIENT TO CONFER CORROSION-INHIBITING PROPERTIES ON THE COMPOSITION, OF AN AMINE SALT OF AN ALIPHATIC HALF ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC AND ALKYL SUBSTITUTED PHTHALIC ACIDS, THE ALIPHATIC RESIDUE OF SAID ESTER CONTAINING AT LEAST 8 CARBON ATOMS.
References Cited (Backward Citations)
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Cited
US2134959A
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US2344016A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |