US2902511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil additive and process for its preparation
Assignee: Individual
•
Filing: 1956-09-17
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Granted: 1959-09-01
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Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Thaddeus W Culmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:31
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C07; C07C; C07C309/00; C07C309/01; C07C309/62; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/12; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A NOVEL METHOD OF MAKING AN ADDITIVE FOR A LUBRICATING OIL WHICH COMPRISES: (A) CONCURRENTLY INTRODUCING INTO A QUANTITY OF AN ALKALI METAL PETROLEUM SULFONATE TWO SEPARATE SALT SOLUTIONS, THE FIRST OF SAID SALT SOLUTION CONSISTING OF AN AQUEOUS SOLUTION OF AN ALKALINE EARTH METAL HALIDE AND THE SECOND OF SAID SALT SOLUTIONS CONSISTING OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SALT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL CARBONATE AND AN ALKALI METAL BORATE, (B) ADMIXING SAID SALT SOLUTIONS WITH SAID SULFONATE, (C) THE MOLAR RATIO OF THE SAID ALKALINE EARTH METAL HALIDE TO THE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKAKLI METAL CARBONATE AND ALKALI METAL BORATE BEING (N+1): N, WHERE N IS THE NUMBER OF MOLS OF THE ALKALI METAL SALT, (D) HEATING SAID ADMIXTURE OF MATERIALS SUFFICIENTLY TO MAINTAIN A TEMPERATURE ABOVE ABOUT 200* F. AND FOR A PERIOD OF TIME SUFFICIENTLY LONG TO DRIVE OFF ALLTHE WATER, AND (E) RECOVERING THE RESULTING PRODUCT.
Claim 2
Dependent Claim
162 words
A NOVEL METHOD OF MAKING AN ADDITIVE FOR A LUBRICATING OIL WHICH COMPRISES: (A) CONCURRENTLY INTRODUCING INTO A QUANTITY OF AN ALKALI METAL PETROLEUM SULFONATE TWO SEPARATE SALT SOLUTIONS, THE FIRST OF SAID SALT SOLUTION CONSISTING OF AN AQUEOUS SOLUTION OF AN ALKALINE EARTH METAL HALIDE AND THE SECOND OF SAID SALT SOLUTIONS CONSISTING OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SALT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL CARBONATE AND AN ALKALI METAL BORATE, (B) ADMIXING SAID SALT SOLUTIONS WITH SAID SULFONATE, (C) THE MOLAR RATIO OF THE SAID ALKALINE EARTH METAL HALIDE TO THE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKAKLI METAL CARBONATE AND ALKALI METAL BORATE BEING (N+1): N, WHERE N IS THE NUMBER OF MOLS OF THE ALKALI METAL SALT, (D) HEATING SAID ADMIXTURE OF MATERIALS SUFFICIENTLY TO MAINTAIN A TEMPERATURE ABOVE ABOUT 200* F. AND FOR A PERIOD OF TIME SUFFICIENTLY LONG TO DRIVE OFF ALLTHE WATER, AND (E) RECOVERING THE RESULTING PRODUCT.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |