Patent US2515697A successfully refreshed from Google Patents.
US2515697A
Expired / Lapsed
US
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Treatment of spinnerettes
Assignee: Wyeth Holdings LLC
•
Filing: 1946-04-05
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Granted: 1950-07-18
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Expires: 1966-04-05
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:06
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02; D01D4/022
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
IN A WET SPINNING PROCESS COMPRISING EXTRUDING A SUITABLE LIQUIFIED MATERIAL THROUGH A SPINNERETTE INTO A SPINNING BATH WHEREIN SAID MATERIAL IS SOLIDIFIED INTO THREADS, FILAMENTS AND THE LIKE, THE IMPROVEMENT COMPRISING USING A SPINNERETTE CARRYING AN ADHERENT CURED FILM OF A SILICONE CONSISTING OF A LINEAR POLYMER OF THE STRUCTURAL UNIT
References Cited (Backward Citations)
US2100581A
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US2310207A
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US2333206A
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US2386466A
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US2294154A
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US2386259A
Cited
US2356542A
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US2405988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |