US2764529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam cylinder lubricating oil
Assignee: North Atlantic Energies SA
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Filing: 1952-04-23
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Granted: 1956-09-25
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Expires: 1972-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Leygonie
- 👤 Leger Bernard B De Saint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:19
CPC Classifications
C; C10; C10M; C10M101/00; C10M101/02; C10M2203/00; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A STEAM CYLINDER LUBRICATING OIL COMPRISING A PROPANE-DEASPHALTED PHENOL TREATED MID-CONTINENT REDUCED CRUDE CONTAINING COMBINED THEREWITH FROM 10% TO 40% BY VOLUME OF A HIGH MOLECULAR WEIGHT PARAFFINIC MATERIAL OBTAINED BY TREATING AN ASPHALT WITH FROM 10 TO 12 VOLUMES OF A LIQUID MIXTURE OF BUTANE AND PROPANE AT A TAINING FROM 10% TO 30% BY VOLUME OF PROPANE AT A TEMPERATURE WITHIN A RANGE FROM 70* C. TO 100* C. TO OBTAIN AN EXTRACT CONTAINING BOTH PARAFFINIC AND NAPHTHENIC COMPONENTS, EXTRACTING THE EXTRACT THUS OBTAINED WITH ANHYDROUS PHENOL, AND OBTAINING THEREFROM SAID HIGH MOLECULAR WEIGHT PARAFFINIC MATERIAL AS A RAFFINATE.
Claim 2
Dependent Claim
101 words
A STEAM CYLINDER LUBRICATING OIL COMPRISING A PROPANE-DEASPHALTED PHENOL TREATED MID-CONTINENT REDUCED CRUDE CONTAINING COMBINED THEREWITH FROM 10% TO 40% BY VOLUME OF A HIGH MOLECULAR WEIGHT PARAFFINIC MATERIAL OBTAINED BY TREATING AN ASPHALT WITH FROM 10 TO 12 VOLUMES OF A LIQUID MIXTURE OF BUTANE AND PROPANE AT A TAINING FROM 10% TO 30% BY VOLUME OF PROPANE AT A TEMPERATURE WITHIN A RANGE FROM 70* C. TO 100* C. TO OBTAIN AN EXTRACT CONTAINING BOTH PARAFFINIC AND NAPHTHENIC COMPONENTS, EXTRACTING THE EXTRACT THUS OBTAINED WITH ANHYDROUS PHENOL, AND OBTAINING THEREFROM SAID HIGH MOLECULAR WEIGHT PARAFFINIC MATERIAL AS A RAFFINATE.
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |