US2499710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosive lubricating oil and a process of fractionating alkali and alkaline earth metal petroleum sulfonates
Assignee: Union Oil Company of California
•
Filing: 1945-04-06
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Granted: 1950-03-07
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Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Chester E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:37
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C309/00; C07C309/01; C07C309/62; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/18; C10M2205/22; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ANTICORROSIVE LUBRICATING OIL HAVING HIGH RESISTANCE TO HUMIDITY CONSISTING ESSENTIALLY OF A LUBRICATING OIL AND SOAPS SELECTED FROM THE CLASS CONSISTING OF THE ALKALI AND ALKALINE EARTH METAL SOAPS OF PETROLEUM SULFONIC ACIDS, WHICH PETROLEUM SULFONATE SOAP IS OBTAINED AS THE RAFFINATE FROM THE TREATMENT OF A MATERIAL OIL SOLUTION OF THE CORRESPONDING UNTREATED SOAP OF A PETROLEUM SULFONIC ACID AT A TEMPERATURE BETWEEN ABOUT 100*F. AND ABOUT 450*F. WITH A SUBSTANTIAL AMOUNT OF A SOLID ADSORBENT SO AS TO EXTRACT BETWEEN ABOUT 5% AND 30% OF THE SOAPS THEREIN HAVING A COMPARATIVELY LOWER RESISTANCE TO HUMIDITY.
Claim 2
Dependent Claim
98 words
AN ANTICORROSIVE LUBRICATING OIL HAVING HIGH RESISTANCE TO HUMIDITY CONSISTING ESSENTIALLY OF A LUBRICATING OIL AND SOAPS SELECTED FROM THE CLASS CONSISTING OF THE ALKALI AND ALKALINE EARTH METAL SOAPS OF PETROLEUM SULFONIC ACIDS, WHICH PETROLEUM SULFONATE SOAP IS OBTAINED AS THE RAFFINATE FROM THE TREATMENT OF A MATERIAL OIL SOLUTION OF THE CORRESPONDING UNTREATED SOAP OF A PETROLEUM SULFONIC ACID AT A TEMPERATURE BETWEEN ABOUT 100*F. AND ABOUT 450*F. WITH A SUBSTANTIAL AMOUNT OF A SOLID ADSORBENT SO AS TO EXTRACT BETWEEN ABOUT 5% AND 30% OF THE SOAPS THEREIN HAVING A COMPARATIVELY LOWER RESISTANCE TO HUMIDITY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |