Patent US3048544A successfully refreshed from Google Patents.
US3048544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant composition
Assignee: California Research LLC
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Filing: 1959-06-10
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Granted: 1962-08-07
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 William T Stewart
- 👤 Frank A Stuart
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:01
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/005; C08; C08F; C08F22/00; C08F22/36; C08F222/00; C08F222/36; C08F222/40; C08F222/406; C08F290/00; C08F290/02; C08F290/06; C08F290/062; C08F8/00; C08F8/48; C10M149/00; C10M149/02; C10M149/06; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/50; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/22; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2209/109; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2227/00; C10M2227/02; C10M2229/00; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF A MINERAL LUBRICATING OIL AND A MINOR PORTION, SUFFICIENT TO ENHANCE THE DETERGENT CHARACTERISTICS OF THE COMPOSITION, OF A POLYMER OF (A) POLYMERIZABLE OIL-SOLUBILIZING COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALKYL ESTERS OF A, B-UNSATURATED MONOCARBOXYLICACIDS OF FROM 3 TO 6 CARBON ATOMS AND FATTY ACIDSESTERS OF UNSATURATED ALCOHOLS OF FROM 2 TO 6 CARBON ATOMS HAVING A SINGLE ETHYLENIC LINKAGE AND CONTAINING AN ALKYL GROUP OF FROM 4 TO 30 CARBON ATOMS, AND (B) THE IMIDE OF MALEIC ANHYDRIDE AND TERAETHYLENE PENTAMINE, SAID POLYMER HAVING A MOLECULAR WEIGHT FROM ABOUT 100,000 TO ABOUT 1,000,000, AND SAID MONOMERS BEING PRESENT IN THE POLYMER IN THE RATIO OF FROM ABOUT 1 TO 20 MONOMER UNITS OF THE OIL-SOLUBILIZING MONOMER (A) FOR EACH MONOMER UNIT OF THE IMIDE MONOMER (B).
Claim 2
Dependent Claim
137 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF A MINERAL LUBRICATING OIL AND A MINOR PORTION, SUFFICIENT TO ENHANCE THE DETERGENT CHARACTERISTICS OF THE COMPOSITION, OF A POLYMER OF (A) POLYMERIZABLE OIL-SOLUBILIZING COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALKYL ESTERS OF A, B-UNSATURATED MONOCARBOXYLICACIDS OF FROM 3 TO 6 CARBON ATOMS AND FATTY ACIDSESTERS OF UNSATURATED ALCOHOLS OF FROM 2 TO 6 CARBON ATOMS HAVING A SINGLE ETHYLENIC LINKAGE AND CONTAINING AN ALKYL GROUP OF FROM 4 TO 30 CARBON ATOMS, AND (B) THE IMIDE OF MALEIC ANHYDRIDE AND TERAETHYLENE PENTAMINE, SAID POLYMER HAVING A MOLECULAR WEIGHT FROM ABOUT 100,000 TO ABOUT 1,000,000, AND SAID MONOMERS BEING PRESENT IN THE POLYMER IN THE RATIO OF FROM ABOUT 1 TO 20 MONOMER UNITS OF THE OIL-SOLUBILIZING MONOMER (A) FOR EACH MONOMER UNIT OF THE IMIDE MONOMER (B).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |