US3101245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polyacrylonitrile fibers
Assignee: Wyeth Holdings LLC
•
Filing: 1960-08-18
•
Granted: 1963-08-20
•
Expires: 1980-08-18
Abstract
No abstract record available.
Inventors
- 👤 Fujita Yoshimasa
- 👤 Okazaki Takeshi
- 👤 Kuratani Keijiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:02
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401926A
Cited
US2697023A
Cited
US2883260A
Cited
US2920934A
Cited
US2952033A
Cited
US2984912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |