US3579414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide conjugate filament
Assignee: Kanegafuchi Spinning Co Ltd
•
Filing: 1969-08-14
•
Granted: 1971-05-18
•
Expires: 1989-08-14
Abstract
Abstract A DRAWN NYLON FILAMENT HAVING SUPERIOR HEAT DURABILITY, YOUNG''S MODULUS AND DYEABILITY WHICH CONSISTS ESSENTIALLY OF A COPOLYAMIDE OF UNDECAMETHYLENE TERPHTHALAMIDE AND EPSILON-CAPROAMIDE, THE LATTER BEING PRESENT IN THE RANGE OF FROM ABOUT 3 TO 40% BY WEIGHT OF THE COPOLYAMIDE.
Inventors
- 👤 Keizo Ueda
- 👤 Tsuneo Ohkawahara
- 👤 Masao Matsui
- 👤 Satoshi Ando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:27
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |