Patent US2515520A successfully refreshed from Google Patents.
US2515520A
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Rust-inhibiting lubricating oil
Assignee: TIDE WATER ASSOCIATED OIL Co
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Filing: 1949-08-16
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Granted: 1950-07-18
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Expires: 1969-08-16
Abstract
No abstract record available.
Inventors
- 👤 William M Leath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:48
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043; C10N; C10N2040/00; C10N2040/135; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A LUBRICANT ESPECIALLY ADAPTED FOR THE LUBRICATION OF STEAM TURBINES FOR MARINE USE, COMPRISING ESSENTIALLY A MINERAL LUBRICATING OIL AND A RUST-INHIBITING QUANTITY OF NOT LESS THAN .01% BY WEIGHT OF ALKYL ACID PHOSPHATE HAVING FROM 8 TO 16 CARBON ATOMS IN THE ALKYL GROUP AND AN ALKOXY ANILINE OF THE GROUP CONSISTING OF ANISIDINE AND PHENETIDINE, THE ALKOXY ANILINE BEING PRESENT IN QUANTITY OF NOT LESS THAN THREE TIMES THE AMOUNT THEORETICALLY REQUIRED TO REACT WITH THE ALKYL ACID PHOSPHATE, THE ALKOXY ANILINE VARYING IN PERCENT OF WEIGHT OF THE OIL FROM .05% TO THE LIMIT OF ITS SOLUBILITY IN THE OIL.
Claim 2
Dependent Claim
103 words
A LUBRICANT ESPECIALLY ADAPTED FOR THE LUBRICATION OF STEAM TURBINES FOR MARINE USE, COMPRISING ESSENTIALLY A MINERAL LUBRICATING OIL AND A RUST-INHIBITING QUANTITY OF NOT LESS THAN .01% BY WEIGHT OF ALKYL ACID PHOSPHATE HAVING FROM 8 TO 16 CARBON ATOMS IN THE ALKYL GROUP AND AN ALKOXY ANILINE OF THE GROUP CONSISTING OF ANISIDINE AND PHENETIDINE, THE ALKOXY ANILINE BEING PRESENT IN QUANTITY OF NOT LESS THAN THREE TIMES THE AMOUNT THEORETICALLY REQUIRED TO REACT WITH THE ALKYL ACID PHOSPHATE, THE ALKOXY ANILINE VARYING IN PERCENT OF WEIGHT OF THE OIL FROM .05% TO THE LIMIT OF ITS SOLUBILITY IN THE OIL.
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |