US3144431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxymethylene polymers stabilized with carbamates
Assignee: Celanese Corp
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Filing: 1959-08-05
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Granted: 1964-08-11
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Expires: 1979-08-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Dolce
- 👤 Frank M Berardinelli
- 👤 Donald E Hudgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/205
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A POLYMER COMPOSITION COCMPRISING AN OXYMETHYLENE POLYMER AND A STABILIZING PROPORTION OF A CARBAMATE, SAID OXYMETHYLENE POLYMER CONTAINING OXYALKYLENE GROUPS HAVING MORE THAN ONE CARBON ATOM AND CONTAINING FROM 60 TO 99.6 MOL PERCENT OF OXYMETHYLENE GROUPS, SAID CARAMATE BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL CARBAMATES, ALKYLENE AND OXYALKYLENE DICARBAMATES, AND POLYMERIC CARBAMATES.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |