US2921895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing petroleum products
Assignee: Compagnie Francaise de Raffinage SA
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Filing: 1955-06-06
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Granted: 1960-01-19
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Gislon Andre
- 👤 Quiquerez Joseph
- 👤 Maurin Jean Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:05
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A METHOD FOR DECOLORIZING AND STABLIZING PETROLEUM DISTILLATE HYDROCARBONS AND FOR THE ELIMINATION THEREFROM OF METALLIC COMPOUNDS, THE STEPS WHICH COMPRISE FORMING IN SITU IN SAID PETROLEUM HYDROCARBONS AN ORGANO-METALLIC COMPOUND WITH A CHELATED BOND BY THE ACTION OF AN ALKYL IMINO-PHENOL AND THEN DECOMPOSING SAID CHELATED COMPOUND BY REACTION WITH A SOLID ACID SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS.
Claim 2
Dependent Claim
70 words
IN A METHOD FOR DECOLORIZING AND STABLIZING PETROLEUM DISTILLATE HYDROCARBONS AND FOR THE ELIMINATION THEREFROM OF METALLIC COMPOUNDS, THE STEPS WHICH COMPRISE FORMING IN SITU IN SAID PETROLEUM HYDROCARBONS AN ORGANO-METALLIC COMPOUND WITH A CHELATED BOND BY THE ACTION OF AN ALKYL IMINO-PHENOL AND THEN DECOMPOSING SAID CHELATED COMPOUND BY REACTION WITH A SOLID ACID SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS.
References Cited (Backward Citations)
US2723221A
Cited
US2723222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |