Patent US3128296A successfully refreshed from Google Patents.
US3128296A
Expired / Lapsed
US
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Organic phosphinyloxyaluminum compounds and the preparation thereof
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-10-03
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Granted: 1964-04-07
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 William K Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:32
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US2288288A
Cited
US2922738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |