US2917458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene grease
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-04-09
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Granted: 1959-12-15
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Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
- 👤 Charles W Seelbach
- 👤 Samuel B Lippincott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/20; C10M2207/00; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/124; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2209/111; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/20; C10M2215/202; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A GREASE COMPOSITION HAVING A PENETRATION ABOVE 290 AT 77*F. AND A DROPPING POINT ABOVE 500*F. COMPRISING AN OIL-SOLUBLE AMORPHOUS POLYROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 300 TO 10,000 AND AN INTRINSIC VISCOSITY UP TO 0.4, 2 TO 5 WT. PERCENT OF AN ISOTACTIC JPOLYPROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 100,000 TO 1,000,000 AND A MELTING POINT IN THE RANGE OF 250* TO 410*F., LAND 5 TO 35 WT. PERCENT OF A SOAP-SALT THICKENER AND WHEREIN THE AMOUNT OF SAID AMORPHOUS POLYPROPYLENE IS SUFFICIENT TO DISPERSE SAID ISOLTACTIC POLYPROPYLENE.
Claim 2
Dependent Claim
95 words
A GREASE COMPOSITION HAVING A PENETRATION ABOVE 290 AT 77*F. AND A DROPPING POINT ABOVE 500*F. COMPRISING AN OIL-SOLUBLE AMORPHOUS POLYROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 300 TO 10,000 AND AN INTRINSIC VISCOSITY UP TO 0.4, 2 TO 5 WT. PERCENT OF AN ISOTACTIC JPOLYPROPYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF 100,000 TO 1,000,000 AND A MELTING POINT IN THE RANGE OF 250* TO 410*F., LAND 5 TO 35 WT. PERCENT OF A SOAP-SALT THICKENER AND WHEREIN THE AMOUNT OF SAID AMORPHOUS POLYPROPYLENE IS SUFFICIENT TO DISPERSE SAID ISOLTACTIC POLYPROPYLENE.
References Cited (Backward Citations)
US2526986A
Cited
US2810695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |