US3463847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing improved polyamidic fibrous material having three dimensional crimpability
Assignee: SNIA Viscosa SpA
•
Filing: 1966-12-12
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Granted: 1969-08-26
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Keizo Ueda
- 👤 Satoshi Ando
- 👤 Tetsuo Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:51
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA732525A
Cited
US2904536A
Cited
US3244785A
Cited
US3264390A
Cited
US3376369A
Cited
US3365873A
Cited
US3343241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |