Patent US2980556A successfully refreshed from Google Patents.
US2980556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing of textile yarn
Assignee: Union Carbide Corp
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Filing: 1957-02-20
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Granted: 1961-04-18
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Expires: 1977-02-20
Abstract
No abstract record available.
Inventors
- 👤 Charles P Mcclelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:37
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M13/00; D06M13/10; D06M13/165; D06M7/00; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
IN A PROCESS OF SIZING TEXTILE YARN, THE IMPROVEMENT WHICH COMPRISES SIZING SAID YARN WITH AN AQUEOUS SOLUTION COMPRISING POLY(ETHYLENE OXIDE), SAID POLY(ETHYLENE OXIDE) HAVING A REDUCED VISCOSITY IN ACETONITRILE OF AT LEAST ONE.
Claim 2
Dependent Claim
34 words
IN A PROCESS OF SIZING TEXTILE YARN, THE IMPROVEMENT WHICH COMPRISES SIZING SAID YARN WITH AN AQUEOUS SOLUTION COMPRISING POLY(ETHYLENE OXIDE), SAID POLY(ETHYLENE OXIDE) HAVING A REDUCED VISCOSITY IN ACETONITRILE OF AT LEAST ONE.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |