Patent US3709970A successfully refreshed from Google Patents.
US3709970A
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Apparatus and method for quenching and stabilizing extruded molten filaments
Assignee: FMC Corp
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Filing: 1969-07-01
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Granted: 1973-01-09
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Expires: 1989-07-01
Abstract
Abstract A METHOD AND APPARATUS FOR INCREASING THE PRODUCTION CAPABILITY OF AN EXISTING SPINNERET IN THE PREPARATION OF FIBERS FROM MOLTEN FILAMENTS WITH REDUCED CDEMENTATION OF SAID MOLTEN FILAMENTS WHEREIN AN ANNULAR POROUS MEMBER IS POSITIONED BELOW THE SPINNERET TO IMPINGE A UNIFORM AND SPECIFIC RATE OF DIFFUSED COOLING GAS ONTO THE FILAMENTS, IS DISCLOSED HEREIN.
Inventors
- 👤 H Hemker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:46
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088
Claims Analysis
Total Claims: 0
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |