Patent US3117173A successfully refreshed from Google Patents.
US3117173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing substantially oriented filaments having circumferential ridges on the surface
Assignee: EIDP Inc
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Filing: 1962-03-19
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Granted: 1964-01-07
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Dustin S Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20; D02; D02J; D02J1/00; D02J1/22; D02J1/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF PREPARING SUBSTANTIALLY ORIENTED FILAMENTS HAVING AT LEAST 20 TRANSVERSE RIDGES PER INCH OF FILAMENT THAT EXTEND IN A CIRCUMFERENTIAL DIRECTION ON THE FILAMENT SURFACE, WHICH COMPRISES SPINNING A SYNTHETIC ORGANIC LINEAR FIBER-FORMING POLYMER, APPLYING A CRACK-PRODUCTING AGENT TO THE SPUN FILAMENT, PARTIALLY DRAWING THE FILAMENT FROM 1.01 TO 2.5 TIMES THE UNDRAWN LENGTH IN THE PRESENCE OF THE CRACK-PRODUCING AGENT TO IMPART SURFACE CRACKS TRANSVERSE TO THE FILAMENT AXIS, DISOCIATING THE FILAMENT FROM THE INFLUENCE OF THE CRACK-PRODUCING AGENT AND FINALLY DRAWING THE FILAMENT AT LEAST 1.5 TIMES THE PARTIALLY DRAWN LENGTH.
Claim 2
Dependent Claim
95 words
THE PROCESS OF PREPARING SUBSTANTIALLY ORIENTED FILAMENTS HAVING AT LEAST 20 TRANSVERSE RIDGES PER INCH OF FILAMENT THAT EXTEND IN A CIRCUMFERENTIAL DIRECTION ON THE FILAMENT SURFACE, WHICH COMPRISES SPINNING A SYNTHETIC ORGANIC LINEAR FIBER-FORMING POLYMER, APPLYING A CRACK-PRODUCTING AGENT TO THE SPUN FILAMENT, PARTIALLY DRAWING THE FILAMENT FROM 1.01 TO 2.5 TIMES THE UNDRAWN LENGTH IN THE PRESENCE OF THE CRACK-PRODUCING AGENT TO IMPART SURFACE CRACKS TRANSVERSE TO THE FILAMENT AXIS, DISOCIATING THE FILAMENT FROM THE INFLUENCE OF THE CRACK-PRODUCING AGENT AND FINALLY DRAWING THE FILAMENT AT LEAST 1.5 TIMES THE PARTIALLY DRAWN LENGTH.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |