Patent US3736342A successfully refreshed from Google Patents.
US3736342A
Expired / Lapsed
US
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Process for producing trialkoxyaluminum
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1971-07-27
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Granted: 1973-05-29
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Expires: 1991-07-27
Abstract
Abstract A TRIALKOXYLAUMINUM IS PRODUCED FROM AN ALKYLALUMINUM COMPOUND, R1-AL(-R2)-R3 WHEREIN R1 AND R2 REPRESENT ALKYL GROUP HAVING 2 TO 30 CARBON ATOMS, AND R3 AN ALKYL OR ALKOXY GROUPS HAVING 2 TO 30 CARBON ATOMS THROUGH OXIDATION BY CONTACTING THE ALKYLALUMINUM COMPOUND WITH A MOLECULAR OXYGEN-CONTAINING GAS IN A STATE OF FILM HAVING A THICKNESS OF NOT MORE THAN 5 MM., PREFERABLY NOT MORE THAN 3 MM., AT -20* TO 150*C., PREFERABLE 0* TO 100*C. UNDER A PRESSURE OF NOT MORE THAN 50 KG./CM.2 ABSOLUTE, PREFERABLE 0.5 TO 40 KG./CM.2 ABSOLUTE.
Inventors
- 👤 E Ichiki
- 👤 K Ida
- 👤 M Kozai
- 👤 Y Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:56
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/48; C07C29/50; C07C29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |