Patent US2939835A successfully refreshed from Google Patents.
US2939835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of mineral oils to produce light and middle oils
Assignee: NAGYNYOMASU
•
Filing: 1954-12-30
•
Granted: 1960-06-07
•
Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Varga Jozsef
- 👤 Rabo Gyula
- 👤 Zalai Andras
- 👤 Steingaszner Pal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:09
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G47/00; C10G47/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A PROCESS FOR HYDROGENATING ASPHALT-CONTAINING RAW MINERAL OILS AND SIMILIAR HYDROCARBON OILS HAVING AN ASPHALT CONTENT IN THE RANGE OF 6.8-14.4% BY WEIGHT, IN ORDER TO FORM PRODUCTS SELECTED FROM THE GROUP CONSISTING OF LIGHT AND MIDDLE OILS, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH CONSISTS IN ADMIXING THE OILS TO BE HYDROGENATED WITH AN ALIPHATIC DILUENT SELECTED FROM THE GROUP CONSISTING OF MINERAL OIL DISTILLATES, GAS OIL CONTAINING LIGHT AND MIDDLE OILS, HEAVY GAS OIL, AND HEAVY GASOLINE, TO FORM A MIXTURE CONTAINING FROM 20% TO 95% BY WEIGHT OF FRACTIONS BOILING UP TO 350* C. AND HYDROGENATING THIS MIXTURE SUBSTANTIALLY IN THE VAPOR PHASE AT A PRESSURE IN THE RANGE OF 1 TO 110 ATMOSPHERES AND AT A TEMPERATURE OF 420-550* C., IN THE PRESENCE OF A MOVING HYDROGENATION CATALYST OF MILD ACTIVITY.
Claim 2
Dependent Claim
135 words
IN A PROCESS FOR HYDROGENATING ASPHALT-CONTAINING RAW MINERAL OILS AND SIMILIAR HYDROCARBON OILS HAVING AN ASPHALT CONTENT IN THE RANGE OF 6.8-14.4% BY WEIGHT, IN ORDER TO FORM PRODUCTS SELECTED FROM THE GROUP CONSISTING OF LIGHT AND MIDDLE OILS, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH CONSISTS IN ADMIXING THE OILS TO BE HYDROGENATED WITH AN ALIPHATIC DILUENT SELECTED FROM THE GROUP CONSISTING OF MINERAL OIL DISTILLATES, GAS OIL CONTAINING LIGHT AND MIDDLE OILS, HEAVY GAS OIL, AND HEAVY GASOLINE, TO FORM A MIXTURE CONTAINING FROM 20% TO 95% BY WEIGHT OF FRACTIONS BOILING UP TO 350* C. AND HYDROGENATING THIS MIXTURE SUBSTANTIALLY IN THE VAPOR PHASE AT A PRESSURE IN THE RANGE OF 1 TO 110 ATMOSPHERES AND AT A TEMPERATURE OF 420-550* C., IN THE PRESENCE OF A MOVING HYDROGENATION CATALYST OF MILD ACTIVITY.
References Cited (Backward Citations)
US1993226A
Cited
US1993386A
Cited
US2326799A
Cited
US2426929A
Cited
US2715603A
Cited
US2768936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |