US2592497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricant
Assignee: Standard Oil Development Co
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Filing: 1949-10-29
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Granted: 1952-04-08
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Walter E Waddey
- 👤 Elmer B Cyphers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
C; C10; C10M; C10M163/00; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/04; C10M2211/044; C10M2211/06; C10M2211/08; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10M2223/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A LUBRICATING COMPOSITION WHICH COMPRISES A MAJOR AMOUNT OF A LUBRICATING OIL BASE STOCK AND A MINOR AMOUNT OF A MIXTURE OF ABOUT 2 1/2% TO 10% BY WEIGHT OF A 50% OIL CONCENTRATE OF A P2S5 TREATED DEGRAS ANALYZING FROM ABOUT 5.01% TO 7.98% SULFUR AND FROM ABOUT 1.0% TO 2.51% PHOSPHOROUS, AND ABOUT 5% TO 7.5% CHLORINATED WAX CONTAINING ABOUT 40% CHLORINE.
Claim 2
Dependent Claim
64 words
A LUBRICATING COMPOSITION WHICH COMPRISES A MAJOR AMOUNT OF A LUBRICATING OIL BASE STOCK AND A MINOR AMOUNT OF A MIXTURE OF ABOUT 2 1/2% TO 10% BY WEIGHT OF A 50% OIL CONCENTRATE OF A P2S5 TREATED DEGRAS ANALYZING FROM ABOUT 5.01% TO 7.98% SULFUR AND FROM ABOUT 1.0% TO 2.51% PHOSPHOROUS, AND ABOUT 5% TO 7.5% CHLORINATED WAX CONTAINING ABOUT 40% CHLORINE.
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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |