US3095258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt spinning process for producing hollow-core filament
Assignee: EIDP Inc
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Filing: 1962-06-22
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Granted: 1963-06-25
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Paul T Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:38
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN THE MELT-SPINNING PROCESS OF EXTRUDING MOLTEN SUNTHETIC LINEAR POLYMER UNDER PRESSURE THROUGH A SPINNERT ORFICE TO FORM A FILAMENT AND QUENCHING TO SOLIDIFY THE FILAMENT, THE IMPROVEMENT FOR PRODUCING A HOLLOW CORE FILAMENT OF EXTRUDING A POLYMER MELT WHICH RELEASES GAS, AS PRESSURE ON THE POLYMER DECREASES DURING FORMATION OF THE FIALMENT, THROUGH A CENTER-OBSTRUCTED ORIFICE TO FORM A CENTRAL VOID SURROUNDED BY A CONTINUOUS UNBROKEN POLYMER SHEATH, THE QUANTITY OF RELEASED GAS BEING SUFFICIENT TO MAINTAIN A VOID IN THE FILAMENT PRODUCED QHICH FILAMENT.
Claim 2
Dependent Claim
86 words
IN THE MELT-SPINNING PROCESS OF EXTRUDING MOLTEN SUNTHETIC LINEAR POLYMER UNDER PRESSURE THROUGH A SPINNERT ORFICE TO FORM A FILAMENT AND QUENCHING TO SOLIDIFY THE FILAMENT, THE IMPROVEMENT FOR PRODUCING A HOLLOW CORE FILAMENT OF EXTRUDING A POLYMER MELT WHICH RELEASES GAS, AS PRESSURE ON THE POLYMER DECREASES DURING FORMATION OF THE FIALMENT, THROUGH A CENTER-OBSTRUCTED ORIFICE TO FORM A CENTRAL VOID SURROUNDED BY A CONTINUOUS UNBROKEN POLYMER SHEATH, THE QUANTITY OF RELEASED GAS BEING SUFFICIENT TO MAINTAIN A VOID IN THE FILAMENT PRODUCED QHICH FILAMENT.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |