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US3487452A
Expired / Lapsed
US
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Alkenylsuccinic amide-lactones
Assignee: Monsanto Co
•
Filing: 1968-03-15
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Granted: 1969-12-30
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Expires: 1988-03-15
Abstract
No abstract record available.
Inventors
- 👤 James C Wygant
- 👤 Erhard J Prill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:30
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3155685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |