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US3158642A
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US
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Phosphine oxide polymers
Assignee: Monsanto Co
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Filing: 1961-03-15
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Granted: 1964-11-24
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Expires: 1981-03-15
Abstract
No abstract record available.
Inventors
- 👤 Earl C Chapin
- 👤 Albert Y Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:00
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2957931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |