US3381024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for directly manufacturing alkylaluminum compounds
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1964-07-08
•
Granted: 1968-04-30
•
Expires: 1984-07-08
Abstract
No abstract record available.
Inventors
- 👤 Toyoshima Kiyoshi
- 👤 Ichiki Eiichi
- 👤 Ryu Hirosuke
- 👤 Yashima Akira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:57
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3032574A
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US2845447A
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US2787626A
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US3076006A
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US2921876A
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US3047618A
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US3294770A
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US3305571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |