Patent US2522155A successfully refreshed from Google Patents.
US2522155A
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Lubricating compositions
Assignee: Shell Development Co
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Filing: 1946-10-18
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Granted: 1950-09-12
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Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Seaver A Ballard
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33303; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C10M2207/00; C10M2207/02; C10M2207/023; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A LUBRICATING COMPOSITION COMPRISING AS THE MAJOR LUBRICATING CONSTITUENT THEREOF A MIXTURE OF LINEAR POLYMERS OF GLYCIDYL ISOPROPYL ETHER HAVING A MOLECULAR WEIGHT OF ABOUT 773 AND A NITROGEN CONTENT OF ABOUT 0.15%, SAID NITROGEN CONTENT BEING CONTAINED IN DI-ISOPROPYLAMINO END GROUPS ATTACHED TO POLYMERIC MEMBERS OF SAID MIXTURE, AND A MINOR AMOUNT, SUFFICIENT TO STABILIZE SAID MIXTURE AGAINST OXIDATION, OF PHENYL-ALPHA-NAPHTHYLAMINE.
Claim 2
Dependent Claim
62 words
A LUBRICATING COMPOSITION COMPRISING AS THE MAJOR LUBRICATING CONSTITUENT THEREOF A MIXTURE OF LINEAR POLYMERS OF GLYCIDYL ISOPROPYL ETHER HAVING A MOLECULAR WEIGHT OF ABOUT 773 AND A NITROGEN CONTENT OF ABOUT 0.15%, SAID NITROGEN CONTENT BEING CONTAINED IN DI-ISOPROPYLAMINO END GROUPS ATTACHED TO POLYMERIC MEMBERS OF SAID MIXTURE, AND A MINOR AMOUNT, SUFFICIENT TO STABILIZE SAID MIXTURE AGAINST OXIDATION, OF PHENYL-ALPHA-NAPHTHYLAMINE.
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) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |