Patent US2901432A successfully refreshed from Google Patents.
US2901432A
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Copolymers of propylene and piperylene as grease thickeners
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-10-26
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Granted: 1959-08-25
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Expires: 1976-10-26
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
- 👤 Charles W Seelbach
- 👤 Delmer L Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:28
CPC Classifications
C; C10; C10M; C10M5/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/109; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND GREASE THICKENING AMOUNT OF A COPOLYMER OF PROPYLENE AND PIPERYLENE CONTAINING ABOUT 1.0 TO 50 WT. PERCENT PIPERYLENE AND 99 TO 50.0 WT. PERCENT POPPYLENE, SAID COPOLYMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 1,000 TO 500,000 AND BEING PREPARED BY COPOLYMERIZING AT PRESSURES BELOW 1000 POUNDS PER SQUARE INCH IN THE PRESENCE OF A CATALYST COMPRISING A MIXTURE OF REDUCING METALLOORGANO COMPOUND AND A REDUCIBLE METAL COMPOUND.
Claim 2
Dependent Claim
83 words
A LUBRICATING GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND GREASE THICKENING AMOUNT OF A COPOLYMER OF PROPYLENE AND PIPERYLENE CONTAINING ABOUT 1.0 TO 50 WT. PERCENT PIPERYLENE AND 99 TO 50.0 WT. PERCENT POPPYLENE, SAID COPOLYMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 1,000 TO 500,000 AND BEING PREPARED BY COPOLYMERIZING AT PRESSURES BELOW 1000 POUNDS PER SQUARE INCH IN THE PRESENCE OF A CATALYST COMPRISING A MIXTURE OF REDUCING METALLOORGANO COMPOUND AND A REDUCIBLE METAL COMPOUND.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |