US2961406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pentaerythritol ester lubricants
Assignee: Hercules Powder Co
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Filing: 1959-04-23
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Granted: 1960-11-22
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Expires: 1979-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry D Mcneil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:53
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/22; C07C69/33; C10; C10M; C10M169/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A LUBRICANT COMPOSITION CONSISTING ESENTIALLY OF (1) A PENTAERYTHRITOL TETRAESTER OF ANM ACID SELECTED FROM THE GROUP CONSISTING OF ALKANOIC ACIDS HAVING FROM 5 TO 10 CARBON ATOMS AND MIXTURES OF ALKANOIC ACIDS HAVING FROM 2 TO 12 CARBON ATOMS IN PROPORTIONS TO PROVIDE AN AVERAGE CHAIN LENGTH OF FROM 5 TO 10 CARBON ATOMS, AND (2) A MINOR AMOUNT OF A DIESTER OF 5,5-DIMETHYLOL DIOXANE-1,3 WITH AT LEAST ONE ALKANOIC ACID HAVING FROM 2 TO 1, CARBON ATOMS, THE PENTAERYTHRITOL TETRAESTER COMPRISING FROM 85% TO 99% BY WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
92 words
A LUBRICANT COMPOSITION CONSISTING ESENTIALLY OF (1) A PENTAERYTHRITOL TETRAESTER OF ANM ACID SELECTED FROM THE GROUP CONSISTING OF ALKANOIC ACIDS HAVING FROM 5 TO 10 CARBON ATOMS AND MIXTURES OF ALKANOIC ACIDS HAVING FROM 2 TO 12 CARBON ATOMS IN PROPORTIONS TO PROVIDE AN AVERAGE CHAIN LENGTH OF FROM 5 TO 10 CARBON ATOMS, AND (2) A MINOR AMOUNT OF A DIESTER OF 5,5-DIMETHYLOL DIOXANE-1,3 WITH AT LEAST ONE ALKANOIC ACID HAVING FROM 2 TO 1, CARBON ATOMS, THE PENTAERYTHRITOL TETRAESTER COMPRISING FROM 85% TO 99% BY WEIGHT OF THE COMPOSITION.
References Cited (Backward Citations)
CA536837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |