US2551737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of inhibitors
Assignee: Universal Oil Products Co
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Filing: 1948-05-25
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Granted: 1951-05-08
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Expires: 1968-05-25
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:28
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/182; C10L1/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR TREATING A WOOD TAR DISTILLATE TO IMPROVE THE INHIBITING PROPERTIES THEREOF WHICH COMPRISES HEATING SAID DISTILLATE TO A TEMPERATURE OF FROM ABOUT 225* C. TO ABOUT 300* C. WHILE IN CONTACT WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 3% TO ABOUT 10% OF AN INORGANIC HALIDE SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHLORIDE AND MAGNESIUM CHLORIDE, THE WEIGHT RATIO OF SAID DISTILLATE TO SAID SOLUTION BEING WITHIN THE APPROXIMATE RANGE OF 0.1:1 TO 2:1, SEPARATING AN OIL PHASE FROM THE REACTION MIXTURE, AND RECOVERING FROM SAID OIL PHASE A WOOD TAR DISTILLATE OF IMPROVED INHINITING VALUE.
Claim 2
Dependent Claim
101 words
A PROCESS FOR TREATING A WOOD TAR DISTILLATE TO IMPROVE THE INHIBITING PROPERTIES THEREOF WHICH COMPRISES HEATING SAID DISTILLATE TO A TEMPERATURE OF FROM ABOUT 225* C. TO ABOUT 300* C. WHILE IN CONTACT WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 3% TO ABOUT 10% OF AN INORGANIC HALIDE SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHLORIDE AND MAGNESIUM CHLORIDE, THE WEIGHT RATIO OF SAID DISTILLATE TO SAID SOLUTION BEING WITHIN THE APPROXIMATE RANGE OF 0.1:1 TO 2:1, SEPARATING AN OIL PHASE FROM THE REACTION MIXTURE, AND RECOVERING FROM SAID OIL PHASE A WOOD TAR DISTILLATE OF IMPROVED INHINITING VALUE.
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |