Patent US2408221A successfully refreshed from Google Patents.
US3061402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet spinning synthetic fibers
Assignee: Dow Chemical Co
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Filing: 1960-11-15
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Granted: 1962-10-30
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Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 John H Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:38
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
METHOD FOR CONTINUOUSLY WET SPINNING SYNTHETIC TEXTILE FIBERS WHICH COMPRISES FORMING A WATER-COAGULABLE SPINNING SOLUTION OF A SYNTHETIC FIBER-FORMING POLYMER IN A
Claim 2
Dependent Claim
22 words
METHOD FOR CONTINUOUSLY WET SPINNING SYNTHETIC TEXTILE FIBERS WHICH COMPRISES FORMING A WATER-COAGULABLE SPINNING SOLUTION OF A SYNTHETIC FIBER-FORMING POLYMER IN 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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |