US3049755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for stretch spinning cuprammonium rayon
Assignee: Asahi Kasei Corp
•
Filing: 1960-07-25
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Granted: 1962-08-21
•
Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Aizawa Hiizu
- 👤 Ishida Fukusa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:00
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/12; D01D5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1590600A
Cited
US2828497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |