Patent US3050540A successfully refreshed from Google Patents.
US3050540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkyl aluminum compounds
Assignee: Ethyl Corp
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Filing: 1958-07-30
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Granted: 1962-08-21
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Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Merle L Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:13
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A PROCESS OF FORMING AN ETHYL ALUMINUM COMPOUND BY REACTING ALUMINYM WITH HYDROGEN IN THE PRESENCE OF TRIETHYL ALUMINUM, SAID ALUMINUM BEING ACTIVE AND SUSCEPTIBLE TO SAID TREATMENT, THE IMPROVEMENT COMPRISING SUPPLYING AS A HYDROGENATION ACCELERATOR A CATALYTIC QUANTITY, OF FROM ABOUT 0.1 TO 25 MOLE PERCENT ON THE BASIS OF THE TRIETHYL, ALUMINUM PRESENT, OF AN ORGANO COMPOUND OF A REACTIVE METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND SAID COMPOUND CONSISTING OF METAL, CARBON AND HYDROGEN, AND CARRYING OUT SAID HYDROGEN TREATMENT AT A SUPRAATMOSPHERIC PRESSURE OF UP TO 5,000 POUNDS PER SQUARE INCH AND AT A TEMPERATURE OF FROM 75 TO 200*C.
Claim 2
Dependent Claim
112 words
IN A PROCESS OF FORMING AN ETHYL ALUMINUM COMPOUND BY REACTING ALUMINYM WITH HYDROGEN IN THE PRESENCE OF TRIETHYL ALUMINUM, SAID ALUMINUM BEING ACTIVE AND SUSCEPTIBLE TO SAID TREATMENT, THE IMPROVEMENT COMPRISING SUPPLYING AS A HYDROGENATION ACCELERATOR A CATALYTIC QUANTITY, OF FROM ABOUT 0.1 TO 25 MOLE PERCENT ON THE BASIS OF THE TRIETHYL, ALUMINUM PRESENT, OF AN ORGANO COMPOUND OF A REACTIVE METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND SAID COMPOUND CONSISTING OF METAL, CARBON AND HYDROGEN, AND CARRYING OUT SAID HYDROGEN TREATMENT AT A SUPRAATMOSPHERIC PRESSURE OF UP TO 5,000 POUNDS PER SQUARE INCH AND AT A TEMPERATURE OF FROM 75 TO 200*C.
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |