US2744872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear lubricant comprising a wide mineral oil blend and an oxidized paraffinic residuum
Assignee: Texaco Inc
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Filing: 1953-06-23
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Granted: 1956-05-08
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Expires: 1973-06-23
Abstract
No abstract record available.
Inventors
- 👤 Roy F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/026; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A GEAR LUBRICANT CONSISTING ESSENTIALLY OF ABOUT 3035 PERCENT BY WEIGHT OF AN UNOXIDIZED HEAVY MIXED BASE RESIDUAL OIL HAVING A VISCOSITY OF ABOUT 700-750 SECONDS SAYBOLT UNIVERSAL AT 210* F., ABOUT 30-35 PER CENT BY WEIGHT OF AN UNOXIDIZED NAPTHENIC DISTILLATE OIL HAVING A VISCOSITY OF ABOUT 50-75 SECONDS SAYBOLT UNIVERSAL AT 100* F. AND ABOUT 30-35 PER CENT BY WEIGHT OF A FLUID CUT BACK OXIDIZED RESIDUUM HAVING A SAYBOLT FUROL VISCOSITY OF ABOUT 175-225 SECONDS AT 210* F. AND CONSISTING OF ABOUT 40-60 PER CENT BY WEIGHT OF A NAPTHENIC DISTILLATE OIL HAVING A VISCOSITY OF ABOUT 75-125 SECONDS SAYBOLT UNIVERSAL AT 100* F. AND ABOUT 40-60 PER CENT BY WEIGHT OF AN OXIDIZED RESIDUUM HAVING A PENETRATION AT 77* F. ABOUT 55-75, OBTAINED BY OXIDIZING A PARAFFINIC CYLINDER STOCK RESIDUUM HAVING A VISCOSITY OF ABOUT 100-150 SECONDS SAYBOLT UNIVERSAL AT 210* F.
Claim 2
Dependent Claim
146 words
A GEAR LUBRICANT CONSISTING ESSENTIALLY OF ABOUT 3035 PERCENT BY WEIGHT OF AN UNOXIDIZED HEAVY MIXED BASE RESIDUAL OIL HAVING A VISCOSITY OF ABOUT 700-750 SECONDS SAYBOLT UNIVERSAL AT 210* F., ABOUT 30-35 PER CENT BY WEIGHT OF AN UNOXIDIZED NAPTHENIC DISTILLATE OIL HAVING A VISCOSITY OF ABOUT 50-75 SECONDS SAYBOLT UNIVERSAL AT 100* F. AND ABOUT 30-35 PER CENT BY WEIGHT OF A FLUID CUT BACK OXIDIZED RESIDUUM HAVING A SAYBOLT FUROL VISCOSITY OF ABOUT 175-225 SECONDS AT 210* F. AND CONSISTING OF ABOUT 40-60 PER CENT BY WEIGHT OF A NAPTHENIC DISTILLATE OIL HAVING A VISCOSITY OF ABOUT 75-125 SECONDS SAYBOLT UNIVERSAL AT 100* F. AND ABOUT 40-60 PER CENT BY WEIGHT OF AN OXIDIZED RESIDUUM HAVING A PENETRATION AT 77* F. ABOUT 55-75, OBTAINED BY OXIDIZING A PARAFFINIC CYLINDER STOCK RESIDUUM HAVING A VISCOSITY OF ABOUT 100-150 SECONDS SAYBOLT UNIVERSAL AT 210* F.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |