US3154407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing aluminum
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1961-10-26
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Granted: 1964-10-27
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Ikeda Hachiro
- 👤 Yurimoto Juntaro
- 👤 Ryu Hirosuke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:17
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD FOR MANUFACTURING ALUMINUM, WHICH COMPRISES HEATING A COMPLES COMPOUND REPRESENTED BY THE GENERAL FORMULA (R1R2CH--CH2)2AIY-E TO A TEMPERATURE BETWEEN 180* AND 300*C., R1 AND R2 EACH BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOM AND ALKYL RADICAL, Y BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOM AND R1R2CH--CH2-- RADICAL, AND E BEING AN ETHER MOIETY HAVING HYDROCARBON RADICALS AND
Claim 2
Independent Claim
63 words
A METHOD FOR MANUFACTURING ALUMINUM, WHICH COMPRISES HEATING A COMPLES COMPOUND REPRESENTED BY THE GENERAL FORMULA (R1R2CH--CH2)2AIY-E TO A TEMPERATURE BETWEEN 180* AND 300*C., R1 AND R2 EACH BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOM AND ALKYL RADICAL, Y BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOM AND R1R2CH--CH2-- RADICAL, AND E BEING AN ETHER MOIETY HAVING HYDROCARBON RADICALS AND
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |