US3386930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic filaments of polyanhydroglucose triester copolymers
Assignee: Celanese Corp
•
Filing: 1964-09-25
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Granted: 1968-06-04
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Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Santangelo
- 👤 Henry W Steinmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6484; C08B; C08B3/00; C08B3/22; C08G18/4009; C08G18/4081; C08G63/00; C08G63/66; C08L; C08L67/00; C08L67/02; D; D01; D01F; D01F2/00; D01F2/24; D01F2/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2437687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |