US2744871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Shell Development Co
•
Filing: 1953-05-12
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Granted: 1956-05-08
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Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Paul H Williams
- 👤 Lawrence B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
C; C10; C10M; C10M3/00; C10M2201/00; C10M2201/02; C10M2201/087; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/124; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/109; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A LUBRICATING COMPOSITION ADAPTED FOR EXTREME PRESSURE USE COMPRISING A MAJOR AMOUNT OF A WATER MISCIBLE MIXTURE OF MONOHYDROXY OXYETHYLENE OXY 1,2-PROPYLENE ALIPHATIC MONOETHERS IN WHICH THE ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE ARE COMBINED THEREIN AS OXYETHYLENE AND OXY 1,2-PROPYLENE GROUPS IN A RATIO WHICH IS AT LEAST ONE-THIRD PART OF 1,2-PROPYLENE OXIDE FOR EACH PART OF ETHYLENE OXIDE BY WEIGHT, SAID MIXTURE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300 ATTRIBUTABLE TO SAID GROUPS, THE ALIPHATIC MONOETHERS OF SAID MIXTURE CONTAINING IN A SINGLE MOLECULE BOTH THE OXYETHYLENE AND OXY1,2-PROPYLENE GROUPS, AND A MINOR AMOUNT BETWEEN ABOUT 0.1% AND ABOUT 5% BY WEIGHT, SUFFICIENT TO IMPROVE THE EXTREME PRESSURE PROPERTIES THEREOF OF BORIC ACID.
Claim 2
Dependent Claim
116 words
A LUBRICATING COMPOSITION ADAPTED FOR EXTREME PRESSURE USE COMPRISING A MAJOR AMOUNT OF A WATER MISCIBLE MIXTURE OF MONOHYDROXY OXYETHYLENE OXY 1,2-PROPYLENE ALIPHATIC MONOETHERS IN WHICH THE ETHYLENE OXIDE AND 1,2-PROPYLENE OXIDE ARE COMBINED THEREIN AS OXYETHYLENE AND OXY 1,2-PROPYLENE GROUPS IN A RATIO WHICH IS AT LEAST ONE-THIRD PART OF 1,2-PROPYLENE OXIDE FOR EACH PART OF ETHYLENE OXIDE BY WEIGHT, SAID MIXTURE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 300 ATTRIBUTABLE TO SAID GROUPS, THE ALIPHATIC MONOETHERS OF SAID MIXTURE CONTAINING IN A SINGLE MOLECULE BOTH THE OXYETHYLENE AND OXY1,2-PROPYLENE GROUPS, AND A MINOR AMOUNT BETWEEN ABOUT 0.1% AND ABOUT 5% BY WEIGHT, SUFFICIENT TO IMPROVE THE EXTREME PRESSURE PROPERTIES THEREOF OF BORIC ACID.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |