US3511749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide composite filament having a latent highly elastic and highly recoverable crimp
Assignee: SNIA Viscosa SpA
•
Filing: 1967-10-24
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Granted: 1970-05-12
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Expires: 1987-10-24
Abstract
No abstract record available.
Inventors
- 👤 Fumimaro Ogata
- 👤 Katsuhiko Nagamine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:54
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3169945A
Cited
US3162619A
Cited
US3118011A
Cited
US3284417A
Cited
US3342785A
Cited
US3418200A
Cited
US3397107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |