US3488941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for splitting a narrow film or false twisting a fibrous material
Assignee: Teijin Ltd
•
Filing: 1967-12-01
•
Granted: 1970-01-13
•
Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Nobuji Asaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:00
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/087; Y; Y10; Y10S; Y10S264/00; Y10S264/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2522332A
Cited
US2943433A
Cited
US3003304A
Cited
US3156084A
Cited
US3382663A
Cited
US3373554A
Cited
US3395525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |