US3143513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant composition
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-02-20
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Granted: 1964-08-04
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Expires: 1981-02-20
Abstract
No abstract record available.
Inventors
- 👤 Leslie B Day
- 👤 Ronald C Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:47
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M143/00; C10M143/02; C10M145/04; C10M145/06; C10M145/08; C10M145/10; C10M145/12; C10M145/14; C10M145/16; C10M149/00; C10M149/02; C10M157/00; C10M157/04; C10M2205/00; C10M2205/02; C10M2205/022; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/026; C10M2217/028; C10M2217/04; C10M2217/06; C10M2221/00; C10M2221/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT OF SAID OIL, OF A MINERAL LUBRICATING OIL POUR POINT DEPRESSANT WHICH IS AN OILSOLUBLE COPOLYMER OF (1) ESTER OF FURMARIC ACID AND C8 TO C18 ALCOHOL, (2) VINYL ACETATE, AND (3) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND N-VINYL PYROLLIDONE; AND AN AMOUNT WITHIN THE RANGE OF 0.003 TO 0.3 WT. PERCENT SUFFICIENT TO FURTHER DEPRESS THE POUR POINT OF SAID COMPOSITION OF AN OIL-SOLUBLE SYNERGISTICALLY-ACTING COPOLYMER OF 70 TO 98 WT. PERCENT OF POLYETHYLENE HAVING A MOLECULAR WEIGHT OF FROM 800 TO 6000 AND 30 TO 2 WT. PERCENT OF AN ESTER OF VINYL ALCOHOL AND A C1 TO C4 MONOCARBOYXLIC ACID.
Claim 2
Dependent Claim
130 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT OF SAID OIL, OF A MINERAL LUBRICATING OIL POUR POINT DEPRESSANT WHICH IS AN OILSOLUBLE COPOLYMER OF (1) ESTER OF FURMARIC ACID AND C8 TO C18 ALCOHOL, (2) VINYL ACETATE, AND (3) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND N-VINYL PYROLLIDONE; AND AN AMOUNT WITHIN THE RANGE OF 0.003 TO 0.3 WT. PERCENT SUFFICIENT TO FURTHER DEPRESS THE POUR POINT OF SAID COMPOSITION OF AN OIL-SOLUBLE SYNERGISTICALLY-ACTING COPOLYMER OF 70 TO 98 WT. PERCENT OF POLYETHYLENE HAVING A MOLECULAR WEIGHT OF FROM 800 TO 6000 AND 30 TO 2 WT. PERCENT OF AN ESTER OF VINYL ALCOHOL AND A C1 TO C4 MONOCARBOYXLIC 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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |