US3299469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt-spinning apparatus
Assignee: EIDP Inc
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Filing: 1964-11-18
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Granted: 1967-01-24
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Charlton John Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:21
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN APPARATUS FOR MELT SPINNING SYNTHETIC FILAMENTFORMING POLYMERS THROUGH A SPINNERET, FILAMENT-QUENCHING APPARATUS WHICH COMPRISES A HOLLOW CYLINDRICAL FORAMINOUS MEMBER POSITIONED TO FORM A QUENCHING CHAMBER FOR THE FILAMENTS IMMEDIATELY BELOW THE SPINNERET, A JACKET SURROUNDING THE FORAMINOUS MEMBER TO FORM AN ANNULAR PLENUM CHAMBER, AN EXIT TUBE POSITIONED BELOW THE FORAMINOUS MEMBER IN AXIAL ALIGNMENT THEREWITH TO FORM A
Claim 2
Dependent Claim
60 words
IN APPARATUS FOR MELT SPINNING SYNTHETIC FILAMENTFORMING POLYMERS THROUGH A SPINNERET, FILAMENT-QUENCHING APPARATUS WHICH COMPRISES A HOLLOW CYLINDRICAL FORAMINOUS MEMBER POSITIONED TO FORM A QUENCHING CHAMBER FOR THE FILAMENTS IMMEDIATELY BELOW THE SPINNERET, A JACKET SURROUNDING THE FORAMINOUS MEMBER TO FORM AN ANNULAR PLENUM CHAMBER, AN EXIT TUBE POSITIONED BELOW THE FORAMINOUS MEMBER IN AXIAL ALIGNMENT THEREWITH TO FORM A
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |