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Patent US2921027A successfully refreshed from Google Patents.
US2921027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-rust lubricating oil
Assignee: Pure Oil Co
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Filing: 1957-07-26
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Granted: 1960-01-12
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Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:22
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/044; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A MINERAL LUBRICATING OIL, A SMALL AMOUNT OF A POLYVALENT METAL SALT OF AN ALKYL PHENOL SULFIDE SELECTED FROM THE GROUP CONSISTING OF THE BARIUM SALT OF DISOBUTYL PHENOL SULFIDE, THE COBALT SALT OF DISOBUTYL PHENOL SULFIDE, THE COBALT SALT OF TERTIARY AMYL PHENOL SULFIDE, AND THE COBALT SALT OF TERTIARY AMYL PHENOL SULFIDE, A SMALL AMOUNT OF CALCUIM PETROLEUM SULFONATE, A SMALL AMOUNT OF A POLYVALENT METAL SALT OF AN ALKYL DITHIOPHOSPHATE SELECTED FROM THE GROUP CONSISTING OF ZINC HEXYL DITHIOPHOSPHATE, ZINC HEPTYL DITHIOPHOSPHATE, ZINC OCTYL DITHIOPHOSPHATE, CADMIUM HEPTYL DITHIOPHOSPHATE, AND CADMUIM OCTYL DITHIOPHOSPHATE, AND AT LEAST ABOUT 0.2 WEIGHT PERCENT OF A POLYOXYETHYLENE SORBITAN MONOFATTY ACID ESTER CONTAINING FROM 3 TO 6 MOLES OF ETHYLENE OXIDE PER MOLECULE WHEREIN THE FATTY ACID ESTERIFYING GROUP IS SELECTED FROM THE GROUP CONSISTING OF OLEATE, LAURATE, PALMITATE AND STEARATE GROUPS.
Claim 2
Dependent Claim
150 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A MINERAL LUBRICATING OIL, A SMALL AMOUNT OF A POLYVALENT METAL SALT OF AN ALKYL PHENOL SULFIDE SELECTED FROM THE GROUP CONSISTING OF THE BARIUM SALT OF DISOBUTYL PHENOL SULFIDE, THE COBALT SALT OF DISOBUTYL PHENOL SULFIDE, THE COBALT SALT OF TERTIARY AMYL PHENOL SULFIDE, AND THE COBALT SALT OF TERTIARY AMYL PHENOL SULFIDE, A SMALL AMOUNT OF CALCUIM PETROLEUM SULFONATE, A SMALL AMOUNT OF A POLYVALENT METAL SALT OF AN ALKYL DITHIOPHOSPHATE SELECTED FROM THE GROUP CONSISTING OF ZINC HEXYL DITHIOPHOSPHATE, ZINC HEPTYL DITHIOPHOSPHATE, ZINC OCTYL DITHIOPHOSPHATE, CADMIUM HEPTYL DITHIOPHOSPHATE, AND CADMUIM OCTYL DITHIOPHOSPHATE, AND AT LEAST ABOUT 0.2 WEIGHT PERCENT OF A POLYOXYETHYLENE SORBITAN MONOFATTY ACID ESTER CONTAINING FROM 3 TO 6 MOLES OF ETHYLENE OXIDE PER MOLECULE WHEREIN THE FATTY ACID ESTERIFYING GROUP IS SELECTED FROM THE GROUP CONSISTING OF OLEATE, LAURATE, PALMITATE AND STEARATE GROUPS.
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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |