US2729538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of nylon gel formation
Assignee: EIDP Inc
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Filing: 1951-11-30
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Granted: 1956-01-03
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Donald R Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:13
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR FORMING A POLYAMIDE FIBER WHICH COMPRISES COATING WITH A SILICONE THOSE INTERNAL SURFACES OF A MELT SPINNING DEVICE WHICH ARE AHEAD OF THE METERING PUMP AND WHICH DURING CONVENTIONAL OPERATION OF THE SAID SPINNING DEVICE CONTACT MOLTEN POLYAMIDE, THEREAFTER INTRODUCING MOLTEN POLYAMIDE, EXTRUDING THE MELT THROUGH AN ORIFICE AND SOLIDIFYING THE EXTRUDED MASS INTO A FIBER.
Claim 2
Dependent Claim
59 words
A PROCESS FOR FORMING A POLYAMIDE FIBER WHICH COMPRISES COATING WITH A SILICONE THOSE INTERNAL SURFACES OF A MELT SPINNING DEVICE WHICH ARE AHEAD OF THE METERING PUMP AND WHICH DURING CONVENTIONAL OPERATION OF THE SAID SPINNING DEVICE CONTACT MOLTEN POLYAMIDE, THEREAFTER INTRODUCING MOLTEN POLYAMIDE, EXTRUDING THE MELT THROUGH AN ORIFICE AND SOLIDIFYING THE EXTRUDED MASS INTO A FIBER.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |