US2962443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam turbine lubricant
Assignee: Lubrizol Corp
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Filing: 1955-08-31
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Granted: 1960-11-29
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Expires: 1975-08-31
Abstract
No abstract record available.
Inventors
- 👤 Rhodes Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:54
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/24; C07C67/26; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/287; C10M2207/289; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A STEAM TURBINE LUBRICANT COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR BUT EFFECTIVE AMOUNT SUFFICIENT TO INHIBIT THE FORMATION OF RUST AND STABLE EMULSIONS OF AN ACIDIC PRODUCT PREPARED BY THE PROCESS WHICH COMPRISES THE REACTION AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 50*C. TO ABOUT 100*C. OF: (A) AN ALIPHATIC HYDROCARBON SUBSTITUTED SUCCINIC ACID HAVING THE STRUCTURE
Claim 2
Dependent Claim
63 words
A STEAM TURBINE LUBRICANT COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR BUT EFFECTIVE AMOUNT SUFFICIENT TO INHIBIT THE FORMATION OF RUST AND STABLE EMULSIONS OF AN ACIDIC PRODUCT PREPARED BY THE PROCESS WHICH COMPRISES THE REACTION AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 50*C. TO ABOUT 100*C. OF: (A) AN ALIPHATIC HYDROCARBON SUBSTITUTED SUCCINIC ACID HAVING THE STRUCTURE
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |