US3454460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicomponent polyester textile fiber
Assignee: EIDP Inc
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Filing: 1966-09-12
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Granted: 1969-07-08
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 David Emerson Bosley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/14; 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: 2
Claim 1
Independent Claim
171 words
A POLYESTER TEXTILE FIBER COMPRISING TWO DISTINCT COMPONENTS EXTENDING ALONG THE FIBER AND INTIMATELY ADHERED ALONG THEIR LENGTHS IN ECCENTRIC RELATIONSHIP TO THE FIBER CROSS-SECTION; ONE OF SAID COMPONENTS BEING A SATURATED GLYCOL-TEREPHTHALATE HOMOPOLYESTER OF FIBER-FORMING MOLECULAR WEIGHT CHARACTERIZED BY HAVING A RELATIVE VISCOSITY OF 15 TO 25 DETERMINED AS A 10% BY WEIGHT SOLUTION IN MIXTURE OF 10 PARTS PHENOL AND 7 PARTS 2,4,6-TRICHLOROPHENOL AT 25*C., AND BY HAVING A TG SHRINKAGE VALUE OF 45* TO 75*C. DETERMINED FOR AN UNDRAWN FIBER OF THE HOMOPOLYESTER IN WATER; AND THE SECOND OF SAID COMPONENTS BEING A COPOLYESTER OF (A) SAID SATURATED GLYCOL-TEREPHTHALATE AND (B) A MEMBER SELECTED FROM THE GROUP CONSISTING OF A DIFFERENT SATURATED GLYCOL-TEREPHTHALATE AND A SATURATED GLYCOL-ISOPHTHALATE, THE MOL RATIO OF (A) TO (B) BEING FROM 8:2 TO 9:1, THE COPOLYESTER BEING OF FIBER-FORMING MOLECULAR WEIGHT CHARACTERIZED BY A RELATIVE VISCOSITY AT LEAST 5 UNITS HIGHER THAN THE HOMOPOLYESTER COMPONENT AND HAVING A TG SHRINKAGE VALUE WITHIN PLUS OR MINUS 8*C. OF THE VALUE FOR THE HOMOPOLYESTER COMPONENT.
Claim 2
Dependent Claim
171 words
A POLYESTER TEXTILE FIBER COMPRISING TWO DISTINCT COMPONENTS EXTENDING ALONG THE FIBER AND INTIMATELY ADHERED ALONG THEIR LENGTHS IN ECCENTRIC RELATIONSHIP TO THE FIBER CROSS-SECTION; ONE OF SAID COMPONENTS BEING A SATURATED GLYCOL-TEREPHTHALATE HOMOPOLYESTER OF FIBER-FORMING MOLECULAR WEIGHT CHARACTERIZED BY HAVING A RELATIVE VISCOSITY OF 15 TO 25 DETERMINED AS A 10% BY WEIGHT SOLUTION IN MIXTURE OF 10 PARTS PHENOL AND 7 PARTS 2,4,6-TRICHLOROPHENOL AT 25*C., AND BY HAVING A TG SHRINKAGE VALUE OF 45* TO 75*C. DETERMINED FOR AN UNDRAWN FIBER OF THE HOMOPOLYESTER IN WATER; AND THE SECOND OF SAID COMPONENTS BEING A COPOLYESTER OF (A) SAID SATURATED GLYCOL-TEREPHTHALATE AND (B) A MEMBER SELECTED FROM THE GROUP CONSISTING OF A DIFFERENT SATURATED GLYCOL-TEREPHTHALATE AND A SATURATED GLYCOL-ISOPHTHALATE, THE MOL RATIO OF (A) TO (B) BEING FROM 8:2 TO 9:1, THE COPOLYESTER BEING OF FIBER-FORMING MOLECULAR WEIGHT CHARACTERIZED BY A RELATIVE VISCOSITY AT LEAST 5 UNITS HIGHER THAN THE HOMOPOLYESTER COMPONENT AND HAVING A TG SHRINKAGE VALUE WITHIN PLUS OR MINUS 8*C. OF THE VALUE FOR THE HOMOPOLYESTER COMPONENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |