US3702350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester fibers with aliphatic sulphonic acid containing antistatic agents
Assignee: Kanegafuchi Spinning Co Ltd
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Filing: 1971-07-12
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Granted: 1972-11-07
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Expires: 1991-07-12
Abstract
Abstract A FIBER HAVING DURABLE ANTISTATIC AND HYDROPHILIC PROPERTIES TO WITHSTAND REPEATED LAUNDERINGS, WHICH COMPRISES A POLYMER COMPOSITION CONSISTING OF 99.95-60% BY WEIGHT OF A SYNTHETIC LINEAR POLYESTER OR POLYESTERETHER AND 0.0540% BY WEIGHT OF AT LEAST ONE SULPHONIC ACID CONTAINING COMPOUND WHICH IS PREPARED BY SULPHONATING AN EPICHLOROHYDRIN HOMOPOLYMER OR AN ALKYLENEOXIDE/EPICHLOROHYDRIN BOCK COPOLYMER. THE SULPHONIC ACID CONTAINING COMPOUND MAY CONTAIN ALSO AN ACTIVE CHLORINE ATOM, UNSATURATED METHYLENE GROUP OR EPOXY GROUP.
Inventors
- 👤 Isao Kimura
- 👤 Fumimaro Ogata
- 👤 Koichiro Ohtomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:59
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L67/00; Y; Y10; Y10S; Y10S524/00; Y10S524/91; Y10S524/912
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |