US3235536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing phosphonyl polymers
Assignee: Monsanto Co
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Filing: 1963-11-19
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Granted: 1966-02-15
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Albert Y Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:55
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A PROCESS FOR PREPARING LINEAR TERTIARY PHOSPHINE OXIDE POLYMERS CONSISTING OF A PLURALITY OF RECURRING STRUCTURAL UNITS CORRESPONDING TO A GENERAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
28 words
A PROCESS FOR PREPARING LINEAR TERTIARY PHOSPHINE OXIDE POLYMERS CONSISTING OF A PLURALITY OF RECURRING STRUCTURAL UNITS CORRESPONDING TO A GENERAL FORMULA SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |