Patent US3496137A successfully refreshed from Google Patents.
US3496137A
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US
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Stabilization of saturated linear polyesters with phosphines
Assignee: FMC Corp
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Filing: 1967-12-14
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Granted: 1970-02-17
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Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 Mary J Stewart
- 👤 John A Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/50
Claims Analysis
Total Claims: 0
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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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |