US2528465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam inhibited oils
Assignee: California Research LLC
•
Filing: 1947-09-18
•
Granted: 1950-10-31
•
Expires: 1967-09-18
Abstract
No abstract record available.
Inventors
- 👤 Victor N Borsoff
- 👤 James O Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:01
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2219/00; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A COMPOUNDED LUBRICATING OIL COMPRISING A PETROLEUM LUBRICATING OIL, CONTAINING AN OILSOLUBLE METAL SALT SELECTED FROM THE GROUP CONSISTING OF POLYVALENTG METAL PHENATES AND POLYVALENT METAL SALTS OF ORGANO SUBSTITUTED ACIDS OF PHOSPHORUS, AND IN AN AMOUNT SUFFICIENT SUBSTANTIALLY TO INCREASE THE TENDENCY OF THE LUBRICATING OIL TO FOAM EXCESSIVELY AT TEMPERATURES ABOVE ABOUT 150*F., AND UNDER CONDITIONS OF SEVERE OIL AGITATION AND INTERMIXTURE WITH GAS, AND A SMALL AMOUNT, SUFFICIENT TO INHIBIT FOAMING OF THE OIL, OF AN ALKOXY PHENOL WHICH CONTAINS NOT LESS THAN 15% BY WEIGHT OF OXYGEN AND HAS A MOLECULAR WEIGHT NOT HIGHER THAN 270.
Claim 2
Dependent Claim
100 words
A COMPOUNDED LUBRICATING OIL COMPRISING A PETROLEUM LUBRICATING OIL, CONTAINING AN OILSOLUBLE METAL SALT SELECTED FROM THE GROUP CONSISTING OF POLYVALENTG METAL PHENATES AND POLYVALENT METAL SALTS OF ORGANO SUBSTITUTED ACIDS OF PHOSPHORUS, AND IN AN AMOUNT SUFFICIENT SUBSTANTIALLY TO INCREASE THE TENDENCY OF THE LUBRICATING OIL TO FOAM EXCESSIVELY AT TEMPERATURES ABOVE ABOUT 150*F., AND UNDER CONDITIONS OF SEVERE OIL AGITATION AND INTERMIXTURE WITH GAS, AND A SMALL AMOUNT, SUFFICIENT TO INHIBIT FOAMING OF THE OIL, OF AN ALKOXY PHENOL WHICH CONTAINS NOT LESS THAN 15% BY WEIGHT OF OXYGEN AND HAS A MOLECULAR WEIGHT NOT HIGHER THAN 270.
References Cited (Backward Citations)
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Cited
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US2430857A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |