US3682846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester filaments having an improved water-absorbing property
Assignee: Toray Industries Inc
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Filing: 1969-10-27
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Granted: 1972-08-08
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Expires: 1989-10-27
Abstract
Abstract POLYESTER FILAMENTS CONTAINING THEREIN 0.4-5% BY WEIGHT OF A POLYALKYLENE ETHER AND 0.3-3% BY WEIGHT OF A METAL SALT DERIVATIVE, AND HAVING FINE PORES ALIGNED IN THE DIRECTION OF THE FILAMENT AXIS.
Inventors
- 👤 Keizo Sano
- 👤 Taigi Watanabe
- 👤 Michihiko Tanaka
- 👤 Yoshimitsu Ichikawa
- 👤 Koichi Kato
- 👤 Hirokichi Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08L; C08L67/00; C08L67/02; Y; Y10; Y10S; Y10S521/00; Y10S521/905
Claims Analysis
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |